Simbolon, Irene
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014
UI - Skripsi (Membership)
Artikel Jurnal
Wren, Daniel A.
McGraw-Hill , 1979
Buku Teks
Rosefsky, Robert S.
John Wiley & Sons, 1978
Buku Teks
Black, Tyrone
Business Publications, Inc., 1981
Buku Teks