APA (7th ed.) Citation

Nelson, A. L. (1956). Plane trigonometry (3rd ed.). Harper & Brothers Publishers.

Chicago Style (17th ed.) Citation

Nelson, Alfred L. Plane Trigonometry. 3rd ed. New York: Harper & Brothers Publishers, 1956.

MLA (9th ed.) Citation

Nelson, Alfred L. Plane Trigonometry. 3rd ed. Harper & Brothers Publishers, 1956.

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