Cita APA (7th ed.)

Riebel, J. (1953). How to write successful business letters. D.D. Taraporewala.

Cita Chicago (17th ed.)

Riebel, J. How to Write Successful Business Letters. Bombay: D.D. Taraporewala, 1953.

Cita MLA (9th ed.)

Riebel, J. How to Write Successful Business Letters. D.D. Taraporewala, 1953.