Redford, Emmette S., author
Macmillan, 1952
Buku Teks
Swerdlow, Irving, author
Frederick A. Praeger, 1975
Buku Teks
R. B. Soehartono, author
Yayasan Proklamasi, 1974
Buku Teks
Ohlin, Goran
OEDC, 1967
Buku Teks
Koontz, Harold, author
McGraw-Hill, 1956
Buku Teks