APA (7th ed.) Citation

Lennes, N. J. (1928). Plane trigonometry. Harper & Brothers Publishers.

Chicago Style (17th ed.) Citation

Lennes, Nel J. Plane Trigonometry. New York: Harper & Brothers Publishers, 1928.

MLA (9th ed.) Citation

Lennes, Nel J. Plane Trigonometry. Harper & Brothers Publishers, 1928.

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