Le, C. (1979). Smileys people. Macmillan.
Cita Chicago (17th ed.)Le, Carre. Smileys People. India: Macmillan, 1979.
Cita MLA (9th ed.)Le, Carre. Smileys People. Macmillan, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)