The AMA (American Medical Association) Manual of Style provides guidelines for writing, editing and citing articles published in health sciences journals. It is written by JAMA (Journal of the American Medical Association) editors and is used in articles published in AMA journals, as well as in many other scientific publications.
If you are writing on health sciences topics in the field of medicine you will need to be familiar with this style. This guide will help introduce you to following this format for your papers. The entire manual is available as an ebook from the library at the link above.