HARRIS , T. (1989). I'M OK - YOU'RE OK. STERLING PUB.
Cita Chicago (17th ed.)HARRIS , T.A. I'M OK - YOU'RE OK. STERLING PUB, 1989.
Cita MLA (9th ed.)HARRIS , T.A. I'M OK - YOU'RE OK. STERLING PUB, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.