Stannard, Harold
Adam and Charles Black, 1949
Buku Teks
McCue, Janice Helen
The Scarecrow Press , 1988
Buku Teks
Nia Setianingtias
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2008
UI - Tesis (Open)
Alford, B.W.E.
Macmillan, 1988
Buku Teks
Prahastuti Maharani
2015
UI - Tesis (Membership)