edited by Metin Kozak, Nazmi Kozak
Emerald, 2016
eBooks
The Council on Hotel, Restaurant and Institutional Education (CHRIE)
John Willey & Sons, 1995
Buku Referensi
Gray, William S.
Prentiee-Hall, 1996
Buku Teks
DeFranco, Agnes L., 1961-, author
John Wiley & Sons, 2007
Buku Teks
edited by Joseph S. Chen
Emerald, 2017
eBooks