Japan Small Business Research Institute , 1995
Buku Teks
Clarke, Philip, author
David & Charles, 1973
Buku Teks
Staley, Eugene, author
McGraw-hill, 1965
Buku Teks
Khalisa Nurfajri, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2019
UI - Tesis (Membership)
Desi Triwahyuni, author
Universitas Indonesia, 2013
UI - Skripsi (Membership)