APA (7th ed.) Citation

Heineman, E. R. (1956). Plane trigonometry (2d ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Heineman, E. Richard. Plane Trigonometry. 2d ed. New York: McGraw-Hill, 1956.

MLA (9th ed.) Citation

Heineman, E. Richard. Plane Trigonometry. 2d ed. McGraw-Hill, 1956.