APA (7th ed.) Zitazioa
Willerding, M. F., & Hoffman, S. P. (1971). College algebra and trigonometry. Wiley.
Chicago Style (17th ed.) Zitazioa
Willerding, Margaret F., eta Stephen P. Hoffman. College Algebra and Trigonometry. New York: Wiley, 1971.
MLA (9th ed.) Zitazioa
Willerding, Margaret F., eta Stephen P. Hoffman. College Algebra and Trigonometry. Wiley, 1971.
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