Callis, H. G. (1942). Foreign capital in Southeast Asia. International Secretariat, Institute of Pacific Relations.
Chicago-viite (17. p.)Callis, Helmut Gunther. Foreign Capital in Southeast Asia. New York: International Secretariat, Institute of Pacific Relations, 1942.
MLA-viite (9. p.)Callis, Helmut Gunther. Foreign Capital in Southeast Asia. International Secretariat, Institute of Pacific Relations, 1942.
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