Cita APA (7th ed.)

Van Wyk, R. N. (1990). Introduction to Ethics (1a. ed.). St. Martin`s Press.

Cita Chicago (17th ed.)

Van Wyk, Robert N. Introduction to Ethics. 1a. ed. Nueva York: St. Martin`s Press, 1990.

Cita MLA (9th ed.)

Van Wyk, Robert N. Introduction to Ethics. 1a. ed. St. Martin`s Press, 1990.