Cita APA (7th ed.)

Sherman, R. (1972). Oligopoly: An empirical approach. Lexington Books.

Cita Chicago (17th ed.)

Sherman, Roger. Oligopoly: An Empirical Approach. Lexington, Mass: Lexington Books, 1972.

Cita MLA (9th ed.)

Sherman, Roger. Oligopoly: An Empirical Approach. Lexington Books, 1972.