References should be listed in numerical order at the end of the manuscript. Refer to other sections of this page for examples of how to cite different sources.
Dates are abbreviated using only the first three letters of the month (e.g. Mar, Sep).
Titles of journals should be abbreviated according to the style used in Index Medicus. The list of abbreviations for journals can be found here. Book titles are not abbreviated.
In NLM 2nd edition 2007, there is no style applied to citations. No italic, No bold, No underline at all.
