Gaya APA

Armstrong, M., Widianto, G. (1993). Formulir Bisnis: Siap Pakai (Ready Made Business Forms) (-). Jakarta: Arcan.

Gaya MLA

Armstrong, Michael., Widianto, Gianto. "Formulir Bisnis: Siap Pakai (Ready Made Business Forms)". - Jakarta: Arcan, 1993. Text.