APA(7版)引用形式

Richards, P. H. (2002). Law of contract (5th ed.). Longman.

Chicagoスタイル(17版)引用形式

Richards, Paul H. Law of Contract. 5th ed. Harlow, Essex: Longman, 2002.

MLA(9版)引用形式

Richards, Paul H. Law of Contract. 5th ed. Longman, 2002.

警告: この引用は必ずしも正確ではありません.