Cita APA (7th ed.)
Smyth, M., & Alexander, F. (1946). There is a time to laugh. Hammer.
Cita Chicago (17th ed.)
Smyth, M[A]ccaul, i F. Alexander. There Is a Time to Laugh. Wien: Hammer, 1946.
Cita MLA (9th ed.)
Smyth, M[A]ccaul, i F. Alexander. There Is a Time to Laugh. Hammer, 1946.
Atenció: Aquestes cites poden no estar 100% correctes.