Crump, Norman
MacMillan & Co. Ltd, 1952
Buku Teks
Dimas Angga Negoro. author
2007
UI - Tesis (Membership)
edited by Stephan F. Miescher, Michele Mitchell and Naoko Shibusawa
John Wiley & Sons, 2015
Buku Teks
Edwina Pinka Anggarani, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2015
UI - Skripsi (Membership)
Baer, Juliur B., author
Harper , 1949
Buku Teks