Cita APA (7th ed.)

SUPONO, I. (1991). Business dialogues: Indonesian - English. Titik Terang.

Cita Chicago (17th ed.)

SUPONO, Idhie. Business Dialogues: Indonesian - English. Jakarta: Titik Terang, 1991.

Cita MLA (9th ed.)

SUPONO, Idhie. Business Dialogues: Indonesian - English. Titik Terang, 1991.