Cita APA (7th ed.)

Lieberman, L. (1992). Preparation for the CLEP, College-Level Examination Program: The 5 general examinations (3rd ed.). Arco : Prentice Hall.

Cita Chicago (17th ed.)

Lieberman, Leo. Preparation for the CLEP, College-Level Examination Program: The 5 General Examinations. 3rd ed. New York: Arco : Prentice Hall, 1992.

Cita MLA (9th ed.)

Lieberman, Leo. Preparation for the CLEP, College-Level Examination Program: The 5 General Examinations. 3rd ed. Arco : Prentice Hall, 1992.