Gronroos, Cristian
Lexington Book, 1990
Buku Teks
Fitzsimmons, James A., author
2004
Multimedia
Joseph, William, author
McGraw-Hill, 1983
Buku Teks
Gronroos, Cristian
Lexington Book6c1990, 0
Buku Teks
Lovelock, Christopher H., author
Pearson Education international, 2002
Buku Teks