Doctor, R. A. (1999). principal and practice of business communication (F.Y.B com). Sheth.
Chicago-viite (17. p.)Doctor, Rhoda A. Principal and Practice of Business Communication (F.Y.B Com). Mumbai: Sheth, 1999.
MLA-viite (9. p.)Doctor, Rhoda A. Principal and Practice of Business Communication (F.Y.B Com). Sheth, 1999.
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