Brown, L. R. (1999). Vital Sings 1999: The trends that are shaping our future. New York: W. W. Norton & company.
Trích dẫn kiểu ChicagoBrown, Lester R. Vital Sings 1999: The Trends That Are Shaping Our Future. New York: W. W. Norton & company, 1999.
MLA引文Brown, Lester R. Vital Sings 1999: The Trends That Are Shaping Our Future. New York: W. W. Norton & company, 1999.
警告:這些引文格式不一定是100%准確.