Harris, T. A. (1969). I'm ok - you're ok: A practical guide to transactional analysis. Harper & Row, Pub..
Lua i Stíl Chicago (17ú heag.)Harris, Thomas A. I'm Ok - You're Ok: A Practical Guide to Transactional Analysis. New York: Harper & Row, Pub., 1969.
Lua MLA (9ú heag.)Harris, Thomas A. I'm Ok - You're Ok: A Practical Guide to Transactional Analysis. Harper & Row, Pub., 1969.
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