Beheydt, L., author
Peeters, 1993
Buku Teks
Hildegaersberch, W. van
s-Gravenhage Martinus Nijhoff 1870
Buku Teks
Rijpma, E.
J.B .Wonters, 1947-48
Buku Teks
Treviño, Rose Zertuche, author
[American Management Association, ], 2009
eBooks
Danny Susanto, author
1985
UI - Skripsi (Membership)