Iversen, Carl
Levin & Munksgaard, 1936
Buku Teks
Dyah Anggitawati, author
2017
UI - Tesis (Membership)
Adhayani Mentari Paramata, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2016
UI - Tesis (Membership)
Grubel, Herbert G., author
Stanford University Press, 1966
Buku Teks
Artikel Jurnal