APA-Zitierstil (7. Ausg.)

Kerr, A. J. (1989). The principles of the law of contract (4. ed.). Butterworths.

Chicago-Zitierstil (17. Ausg.)

Kerr, Alastair J. The Principles of the Law of Contract. 4. ed. Durban: Butterworths, 1989.

MLA-Zitierstil (9. Ausg.)

Kerr, Alastair J. The Principles of the Law of Contract. 4. ed. Butterworths, 1989.