APA-viite (7. p.)

Williston, S. (1951). Selection of cases on the law of contracts (5th ed.). Little, Brown, and Co.

Chicago-viite (17. p.)

Williston, Samuel. Selection of Cases on the Law of Contracts. 5th ed. Boston: Little, Brown, and Co, 1951.

MLA-viite (9. p.)

Williston, Samuel. Selection of Cases on the Law of Contracts. 5th ed. Little, Brown, and Co, 1951.