APA (7th ed.) Citation

Crowdis, D. G. (1971). Trigonometry: A functional approach. McGraw-Hill Book Co., Inc.

Chicago Style (17th ed.) Citation

Crowdis, David G. Trigonometry: A Functional Approach. New York: McGraw-Hill Book Co., Inc, 1971.

MLA (9th ed.) Citation

Crowdis, David G. Trigonometry: A Functional Approach. McGraw-Hill Book Co., Inc, 1971.