APA (7th ed.) Citation

Hirsch, C. R., & Schoen, H. L. (1990). Trigonometry and its applications. McGraw-Hill.

Chicago Style (17th ed.) Citation

Hirsch, Christian R., and Harold L. Schoen. Trigonometry and Its Applications. New York: McGraw-Hill, 1990.

MLA (9th ed.) Citation

Hirsch, Christian R., and Harold L. Schoen. Trigonometry and Its Applications. McGraw-Hill, 1990.