APA ציטוט

Laffer II, W. B. (1968). Mathematics for general education. California: Dickenson Publishing company.

Trích dẫn kiểu Chicago

Laffer II, Walter B. Mathematics for General Education. California: Dickenson Publishing company, 1968.

ציטוט MLA

Laffer II, Walter B. Mathematics for General Education. California: Dickenson Publishing company, 1968.