APA (7th ed.) Zitazioa

Welchons, A. (1962). Modern trigonometry. Ginn.

Chicago Style (17th ed.) Zitazioa

Welchons, A.M. Modern Trigonometry. Boston: Ginn, 1962.

MLA (9th ed.) Zitazioa

Welchons, A.M. Modern Trigonometry. Ginn, 1962.