Friedman, Milton, 1912-2006, author
New York, N.Y. Fordham University Press 1960,
Buku Teks
Djohar Lusdi, author; Ignatius Harry Masmuri, author
1993
UI - Tesis (Membership)
Yeager, Leland B., author
Holt, Rinehart, and Winston, 1968
Buku Teks
Lastra, Rosa Maria, author
Oxford University Pres, 2015
Buku Teks
Halm, George N., author
University of North-Carolina Press, 1945
Buku Teks