ENGELSOHN, H. S. (1981). Trigonometry. McGraw-hill.
Chicago Style (17th ed.) CitationENGELSOHN, Harold S. Trigonometry. New York: McGraw-hill, 1981.
MLA引文ENGELSOHN, Harold S. Trigonometry. McGraw-hill, 1981.
警告：這些引文格式不一定是100％准確.
APA引文