CSE primarily is used by:

• life sciences
• biomedicine
• mathematics
• natural sciences

Two forms of citation are permitted in CSE style:

1. In the citation-sequence system, citations in the text are numbered consecutively in the order they are cited. These numbers correspond to the references, which are listed at the end of the document in the order they were cited in the text. For example:
   
   

   In-Text: Bacterial communities in the ocean may secrete substances that inhibit the growth of other species (1).

   Reference: (1) Long RA, Azam F. Antagonistic interactions among marine pelagic bacteria. Applied and Environmental Microbiology 2001 (67):4975-4983.

2. In the name-year system, citations in the text consist of the author's surname and the publication year. Complete references are listed alphabetically at the end of the document. For example:

In-Text: Bacterial communities in the ocean may secrete substances that inhibit the growth of other species (Long and Azam 2001).

Reference: Long RA, Azam F. 2001. Antagonistic interactions among marine pelagic bacteria. Applied and Environmental Microbiology 67:4975-4983. For more examples and in-depth treatment, copies of Scientific style and format : the CSE manual for authors, editors, and publishers (7th ed.) are available at in the Evans Library (T11 .S386 2006)