APA Citation

Drooyan, I., & Hadel, W. (1967). Trigonometry, an analytic approach. N. York: Macmillan.

Chicago Style Citation

Drooyan, Irging, and Walter Hadel. Trigonometry, an Analytic Approach. N. York: Macmillan, 1967.

MLA Citation

Drooyan, Irging, and Walter Hadel. Trigonometry, an Analytic Approach. N. York: Macmillan, 1967.

Warning: These citations may not always be 100% accurate.