The primary citation style used in Nursing on this campus is APA (American Psychological Association).
Citations in rough APA style are available in most databases, including CINAHL, Medline, PsycInfo, SocIndex, and Google Scholar. Look for a link for "Cite" or something similar. Always check a citation automatically generated by a computer--they are only as good and the info that goes into them!
The print APA Manual (officially titled the Publication Manual of the American Psychological Association) has directions for everything from title page to appendices.
The AMA, the American Medical Association, also has a citation style, used in their association journal JAMA and considered the standard in non-academic medical publishing.
CINAHL and Medline will show citations in approximate AMA style.
The Library has a LOT of citation tools available for you, for free.
Start at the Citation Help guide: