HARRIS , T. (1989). I'M OK - YOU'RE OK. STERLING PUB.
Chicago Style aipamenaHARRIS , T.A. I'M OK - YOU'RE OK. STERLING PUB, 1989.
MLA aipamenaHARRIS , T.A. I'M OK - YOU'RE OK. STERLING PUB, 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.