Payne, Vivette, author
[American Management Association;, ], 2005
eBooks
edited by W. W. Cooper, H. J. Leavitt [and] M. W. Shelly II
John Wiley & Sons, 1964
Buku Teks
Bolton, W. (William), 1933-, author
McGraw-Hill, 1976
Buku Teks
Blake, Robert R.
Gulf Pub. Co., Book Division, 1978
Buku Teks
Travel Bureau, 1975
Buku Referensi