Cita APA (7a ed.)
Drooyan, I. (1987). Trigonometry: An analytic approach (5.ed.). Macmillan Publishing Company.
Cita Chicago Style (17a ed.)
Drooyan, Irving. Trigonometry: An Analytic Approach. 5.ed. New York: Macmillan Publishing Company, 1987.
Cita MLA (9a ed.)
Drooyan, Irving. Trigonometry: An Analytic Approach. 5.ed. Macmillan Publishing Company, 1987.
Precaución: Estas citas no son 100% exactas.