APA(7版)引用形式

Hugh collins. (1993). The Law Of Contract (2.). Butter worth.

Chicagoスタイル(17版)引用形式

Hugh collins. The Law Of Contract. 2. London: Butter worth, 1993.

MLA(9版)引用形式

Hugh collins. The Law Of Contract. 2. Butter worth, 1993.