Cita APA (7th ed.)

Carpenter, F. I. (1979). Eugene O'Neill. Twayne Publishers.

Cita Chicago (17th ed.)

Carpenter, Frederic I. Eugene O'Neill. Boston: Twayne Publishers, 1979.

Cita MLA (9th ed.)

Carpenter, Frederic I. Eugene O'Neill. Twayne Publishers, 1979.