First of all, you have to take into account and know what is the style of references to use (Vancouver, Chicago, APA, Harvard, MLA, ISO 960 ...). This will determine the way to attribute the merit of your sources and not to breach in plagiarism according to the Intellectual Property Law. For Health Science publications you can choose the style you consider.
The latter would be valid both for quotes and for images or any material that is added to a work or work.
In the case of images, do not forget to look for royalty-free images or correctly quote or reference each image. If not done correctly, the entire work may be identified as plagiarism as reflected in the Intellectual Property Law (brief summary of the most important aspectsbelow).
The author assigns to PARACELSIK, S.L. (hereinafter the publisher) the rights of reproduction, transformation, public communication and distribution and sale of the work electronically or in any of the modalities, forms or supports currently legally contemplated. With this assignment, you accept and undertake the following obligations and responsibilities:
1st. The author responds to the publisher for the authorship and originality of the work and for the peaceful exercise of the rights that he / she grants, stating that he / she has not contracted or will contract any kind of commitments or charges that violate the rights of the publisher or third parties correspond to it.
In this regard, the author is liable to the publisher for all financial charges that may arise for the publisher in favor of third parties due to actions, claims or conflicts derived from the breach of this clause by the author.
2nd. For its part, the editor undertakes to respect the moral rights of the author and to inform him of any infringement of the same that may be carried out by third parties.
3rd. In accordance with Royal Legislative Decree 1/1996, of April 12, which approves the revised text of the Intellectual Property Law and Law 23/2006 of its modification, and regardless of the rights of the author, the editor, as the exclusive assignee of the exploitation rights, may prepend the symbol © in each and every one of the copies of THE WORK published, in any form or modality, with precision of the place and year of disclosure of is. Likewise, the publisher reserves the right to modify any type of information that may appear in the work, without there being an obligation to give prior notice or to inform the author, understanding that publication there of is sufficient.
4º. The publisher is empowered to carry out as many acts as are necessary for the registration of the rights over the work in those public registers that he considers convenient.
5th. The editor and the author may prosecute the infractions that affect the powers that have been granted by means of this assignment. Consequently, in cases of infringement, they may carry out the judicial and extrajudicial actions they deem appropriate, the author agreeing to collaborate in such claims.
6th. Taking into account the authors' publication purpose, the editor is not, in any case, responsible for the failure to achieve the curricular or meritorious objectives pursued by the authors.