Cita APA (7th ed.)

(1966). Essays: 2nd ed (2nd ed.). Wadsworth.

Cita Chicago (17th ed.)

Essays: 2nd Ed. 2nd ed. Belmont, Calif.: Wadsworth, 1966.

Cita MLA (9th ed.)

Essays: 2nd Ed. 2nd ed. Wadsworth, 1966.

Atenció: Aquestes cites poden no estar 100% correctes.