AMA - American Medical Association
AMA is a citation style for health professionals and scientists in the medical field. AMA includes specific style for citations and for formatting research papers.
ACS - American Chemical Society
A standardized guide for writing papers and other documents relating to chemistry, including citations and formatting, developed by the American Chemical Society (ACS).
CSE - Council of Science Editors
CSE style is divided into three sub-styles used in documenting research when writing in the sciences. The Council of Science Editors exists to support editorial practices for scientific writers and is focused on promoting integrity in scientific journal publications.
IEEE - Institute of Electrical and Electronics Engineers
IEEE citation style is commonly used in technical fields such as computer science.