Cita APA (7th ed.)

Hall, R. E., & Lieberman, M. (1998). Economics: Principles and applications. South-Western.

Cita Chicago (17th ed.)

Hall, Robert E., i Marc Lieberman. Economics: Principles and Applications. Cincinnati: South-Western, 1998.

Cita MLA (9th ed.)

Hall, Robert E., i Marc Lieberman. Economics: Principles and Applications. South-Western, 1998.