Cita APA (7th ed.)

Telfer, E. (1980). Happiness. Macmillan Pr..

Cita Chicago (17th ed.)

Telfer, Elizabeth. Happiness. London: Macmillan Pr., 1980.

Cita MLA (9th ed.)

Telfer, Elizabeth. Happiness. Macmillan Pr., 1980.