Cita APA (7th ed.)
Cohen, D. (1993). Algebra and trigonometry (3rd ed.). West Pub. Co..
Cita Chicago (17th ed.)
Cohen, David. Algebra and Trigonometry. 3rd ed. Minneapolis/St. Paul: West Pub. Co., 1993.
Cita MLA (9th ed.)
Cohen, David. Algebra and Trigonometry. 3rd ed. West Pub. Co., 1993.
Atenció: Aquestes cites poden no estar 100% correctes.