APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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