Doctor, R. (2006). Principles and practice of business com. F.Y.B.Com (14th.). Sheth.
Lua i Stíl Chicago (17ú heag.)Doctor, Rhoda. Principles and Practice of Business Com. F.Y.B.Com. 14th. Mumbai: Sheth, 2006.
Lua MLA (9ú heag.)Doctor, Rhoda. Principles and Practice of Business Com. F.Y.B.Com. 14th. Sheth, 2006.
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