Παραπομπή APA

Powell, A. A. (1974). Empirical Analysis of Demand Systems. Lexington.

Παραπομπή Chicago Style

Powell, Alan A. Empirical Analysis of Demand Systems. toronto: Lexington, 1974.

Παραπομπή MLA

Powell, Alan A. Empirical Analysis of Demand Systems. Lexington, 1974.