APA ציטוט
Roethel, L. F. (1965). To improve your grades in trigonometry (1a. ed.). Collier Books.
Chicago Style (17th ed.) Citation
Roethel, Louis F. To Improve Your Grades in Trigonometry. 1a. ed. New York: Collier Books, 1965.
ציטוט MLA
Roethel, Louis F. To Improve Your Grades in Trigonometry. 1a. ed. Collier Books, 1965.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.