Photographs of human subjects are acceptable if the authors have received appropriate permission for publication of the photographs or taken appropriate measures to disguise the individual s identity. In mathematical copy, be precise about alignment of numerals, letters, and symbols. Hand-letter any characters that cannot be typewritten. Acronyms and abbreviations should be avoided and when necessary should be defined the first time they are mentioned. If a trade name is used for a drug, provide the name of the generic along with the manufacturer s information.
References are to be numbered alphabetically and cited in the text by number.
The Reference section should be double-spaced at the end of the text, following the sample format given below. Single-word journal titles should be spelled out in full. Complete information should be given for each reference, including names of all authors and editors, titles of journal articles, inclusive pagination, and year of publication . Journal article 1. Chapter in book 2.