APA (7th ed.) Citation

Hearley, M. J. G. (1942). Modern trigonometry. The Ronald press company.

Chicago Style (17th ed.) Citation

Hearley, Maurice James Goodwin. Modern Trigonometry. New York: The Ronald press company, 1942.

MLA (9th ed.) Citation

Hearley, Maurice James Goodwin. Modern Trigonometry. The Ronald press company, 1942.

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