Cita APA (7a ed.)

Collins, H. (1986). The law of contract. Weidenfeld and Nicolson.

Cita Chicago Style (17a ed.)

Collins, Hugh. The Law of Contract. London: Weidenfeld and Nicolson, 1986.

Cita MLA (9a ed.)

Collins, Hugh. The Law of Contract. Weidenfeld and Nicolson, 1986.