Cita APA (7th ed.)

Kummerow, J., & Hirsh, S. (1989). Lifetypes. Warner Books.

Cita Chicago (17th ed.)

Kummerow, Jean, i Sandra Hirsh. Lifetypes. New York, NY: Warner Books, 1989.

Cita MLA (9th ed.)

Kummerow, Jean, i Sandra Hirsh. Lifetypes. Warner Books, 1989.