Cita APA (7th ed.)
Cohen, D. (1988). Algebra and Trigonometry (2nd ed.). West Publishing Company.
Cita Chicago (17th ed.)
Cohen, David. Algebra and Trigonometry. 2nd ed. New York: West Publishing Company, 1988.
Cita MLA (9th ed.)
Cohen, David. Algebra and Trigonometry. 2nd ed. West Publishing Company, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.