APA (7th ed.) Citation

Curtiss, D. R., & Moulton, E. J. 1. j. a. (1942). Essentails of trigonometry, with applications. Heath.

Chicago Style (17th ed.) Citation

Curtiss, David Raymond, and Elton James 1887- joint author Moulton. Essentails of Trigonometry, with Applications. Boston: Heath, 1942.

MLA (9th ed.) Citation

Curtiss, David Raymond, and Elton James 1887- joint author Moulton. Essentails of Trigonometry, with Applications. Heath, 1942.