Cita APA (7th ed.)

Doctor, R. (1983). Principles & practice of business communication (8th.). Sheth.

Cita Chicago (17th ed.)

Doctor, Radaha. Principles & Practice of Business Communication. 8th. Bombay: Sheth, 1983.

Cita MLA (9th ed.)

Doctor, Radaha. Principles & Practice of Business Communication. 8th. Sheth, 1983.