APA-viite (7. p.)
Cohen, D. (1988). Algebra and Trigonometry (2nd ed.). West Publishing Company.
Chicago-viite (17. p.)
Cohen, David. Algebra and Trigonometry. 2nd ed. New York: West Publishing Company, 1988.
MLA-viite (9. p.)
Cohen, David. Algebra and Trigonometry. 2nd ed. West Publishing Company, 1988.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.