Gaya APA

Adler, R, B., Towne, N. (1990). Looking Out Looking In (6). USA: Harcourt Brace Jovanoich College Publishers.

Gaya MLA

Adler, Ronald, B.., Towne, Nell. "Looking Out Looking In". 6 USA: Harcourt Brace Jovanoich College Publishers, 1990. Buku Text.