APA (7th ed.) Zitazioa
Kaplan, S. H. (1957). Regents exams and answers: Trigonometry (1a. ed.). Barron's educational series INC.
Chicago Style (17th ed.) Zitazioa
Kaplan, Stanley H. Regents Exams and Answers: Trigonometry. 1a. ed. New York: Barron's educational series INC, 1957.
MLA (9th ed.) Zitazioa
Kaplan, Stanley H. Regents Exams and Answers: Trigonometry. 1a. ed. Barron's educational series INC, 1957.
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