APA(7版)引用形式

Frey, M. A., & Frey, P. H. (2001). Essentials of contract law. West/Thomson Learning.

Chicagoスタイル(17版)引用形式

Frey, Martin A., , Phyllis Hurley Frey. Essentials of Contract Law. Albany, NY: West/Thomson Learning, 2001.

MLA(9版)引用形式

Frey, Martin A., , Phyllis Hurley Frey. Essentials of Contract Law. West/Thomson Learning, 2001.