The Council of Science Editors (CSE), formerly the CBE (Council of Biology Editors), produces a guide to appropriate scientific style commonly used for citing sources in the sciences, which includes biology, chemistry, computer science, engineering, geology, mathematics and physics. The guide is also commonly referred to as "the CSE Manual." For more detailed information, see these websites:
CSE does not prescribe a paper format, but the library recommends using 12-point Times New Roman, double-spaced with one-inch margins top, bottom and sides.
A few rules about CSE Name-Year system:
The two types of citations are "end references," included in your References or Cited References page, and "in text references," included within the text of your paper in the paragraph in which you cite that source. References pages are formatted with a hanging indent; the second line of a citation is indented.
Author(s). Date. Title. Edition. Place of publication: publisher. Extent (number of pages). Notes.
Campbell NA, Reece JB, Taylor MB, EJS, Dickey JL. 2009. Parasitic fungi harm plants and animals. In: Biology: concepts & connections. 6th ed.
San Francisco: Pearson/Benjamin Cummings. p. 359.
In text citation: (Campbell et al. 2009)
Schardl CL, Leuchtmann A, Spiering MJ. 2004. Symbioses of grasses with seedborne fungal endophytes. Annual Review of Plant Biology 55:315-40.
In text citation: (Leuchtmann et al. 2004)