Stocking, George W., author
The Twentieth Century Fund , 1949
Buku Teks
Stocking, George W., author
The Twentieth Century Fund, 1948
Buku Teks
Machlup, Fritz, author
The Johns Hopkins Press, 1952
Buku Teks
Kusuma Wardani Aliredja, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2007
UI - Skripsi (Membership)
Plummer, Alfred, author
Sir Isaac Pitman & Sons , 1951
Buku Teks