Cita APA (7a ed.)

Thilly, F. (1905). Introduction to ethics. Charles Scribner's Sons.

Cita Chicago Style (17a ed.)

Thilly, Frank. Introduction to Ethics. New York: Charles Scribner's Sons, 1905.

Cita MLA (9a ed.)

Thilly, Frank. Introduction to Ethics. Charles Scribner's Sons, 1905.