Cita APA (7th ed.)

LAFFER II, W. B. (1968). Mathematics for general education. Dickenson Pub.

Cita Chicago (17th ed.)

LAFFER II, Walter B. Mathematics for General Education. California: Dickenson Pub, 1968.

Cita MLA (9th ed.)

LAFFER II, Walter B. Mathematics for General Education. Dickenson Pub, 1968.