Osborne, J. (1972). The gift of friendship: A play for television. Faber.
Cita Chicago (17th ed.)Osborne, John. The Gift of Friendship: A Play for Television. London: Faber, 1972.
Cita MLA (9th ed.)Osborne, John. The Gift of Friendship: A Play for Television. Faber, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.