Cita APA (7th ed.)

Klein, W. A. (2006). Federal income taxation (Fourteenth edition.). ASPEN Publishers.

Cita Chicago (17th ed.)

Klein, William A. Federal Income Taxation. Fourteenth edition. New York: ASPEN Publishers, 2006.

Cita MLA (9th ed.)

Klein, William A. Federal Income Taxation. Fourteenth edition. ASPEN Publishers, 2006.