SCHIFFMAN, S. Teknik komunikasi bisnis (cold calling tehniques). Binarupa Aksara, 1997.
Chicago Style (17th ed.) CitationSCHIFFMAN, Stephan. Teknik Komunikasi Bisnis (cold Calling Tehniques). Binarupa Aksara, 1997.
MLA (8th ed.) CitationSCHIFFMAN, Stephan. Teknik Komunikasi Bisnis (cold Calling Tehniques). Binarupa Aksara, 1997.
Warning: These citations may not always be 100% accurate.