Schlesinger, Yames R.
Frederick A. Praeger, 1960
Buku Teks
edited by Michael Stohl and Harry R. Targ
Schenkman Publishing Company, 1982
Buku Teks
Keilhau, Wilhelm, author
George Allen & Unwin, 1951
Buku Teks
Nina Mutmainnah, author
2014
UI - Disertasi (Membership)
Grampp, William D.
Richard D. Irwin , 1953
Buku Teks