APA引文
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.
MLA引文
Roethel, Louis F. To Improve Your Grades in Trigonometry. 1a. ed. Collier Books, 1965.
警告：這些引文格式不一定是100％准確.