Riebel, J. (1953). How to write successful business letters. D.D. Taraporewala.
Chicago-čujuhus (17. p.)Riebel, J. How to Write Successful Business Letters. Bombay: D.D. Taraporewala, 1953.
MLA-čujuhus (9. p.)Riebel, J. How to Write Successful Business Letters. D.D. Taraporewala, 1953.
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