APA Style

Arden, M, M, A., Dowling, B, T. (1992). Business concepts for english practice (2). Boston: Heinle & Heinle Publishers.

MLA Style

Arden, Marianne, McDougal, Arden., Dowling, Barbara, Tolley. "Business concepts for english practice". 2 Boston: Heinle & Heinle Publishers, 1992. Bahasa Inggris.