Cita APA (7a ed.)

Train, K. E. (1994). Optimal regulation: The economic theory of natural monopoly. MIT.

Cita Chicago Style (17a ed.)

Train, Kenneth E. Optimal Regulation: The Economic Theory of Natural Monopoly. Cambridge (Massachusetts) [etc.]: MIT, 1994.

Cita MLA (9a ed.)

Train, Kenneth E. Optimal Regulation: The Economic Theory of Natural Monopoly. MIT, 1994.