Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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