Cita APA (7th ed.)
Smith, W. J., & Krahn, F. Laughing Time: Collected Nonsense (Nueva ed.). Farrar, Straus and Giroux.
Cita Chicago (17th ed.)
Smith, William Jay, i Fernando Krahn. Laughing Time: Collected Nonsense. Nueva ed. Nueva York, EUA: Farrar, Straus and Giroux.
Cita MLA (9th ed.)
Smith, William Jay, i Fernando Krahn. Laughing Time: Collected Nonsense. Nueva ed. Farrar, Straus and Giroux.
Atenció: Aquestes cites poden no estar 100% correctes.