APA
Harris T., . (1967). I'am ok-You are ok. New York: AVON Publishers.
Chicago
Harris Thomas, . 1967. I'am ok-You are ok. New York: AVON Publishers.
Harvard
Harris T., . (1967). I'am ok-You are ok. New York: AVON Publishers.
MLA
Harris Thomas, . I'am ok-You are ok. New York: AVON Publishers. 1967.