APA

Urban W. M., . (1930). Fundamentals of ethics: an introduction to moral philosophy. New York: Holt.

Chicago

Urban Wilbur Marshall, . 1930. Fundamentals of ethics: an introduction to moral philosophy. New York: Holt.

Harvard

Urban W. M., . (1930). Fundamentals of ethics: an introduction to moral philosophy. New York: Holt.

MLA

Urban Wilbur Marshall, . Fundamentals of ethics: an introduction to moral philosophy. New York: Holt. 1930.