Cita APA (7th ed.)

Osborne, J. (1963). Under plain cover: A play in one act. faber.

Cita Chicago (17th ed.)

Osborne, John. Under Plain Cover: A Play in One Act. London: faber, 1963.

Cita MLA (9th ed.)

Osborne, John. Under Plain Cover: A Play in One Act. faber, 1963.