Gaya APA

Dowling, M, M, A, B, T. (1992). Business concepts for english practice (ed. 2). Boston: heinle & heinle publisher.

Gaya MLA

Dowling, Marianne, McDougal, Arden;, Barbara, Tolly. "Business concepts for english practice". ed. 2 Boston: heinle & heinle publisher, 1992. Text.