Sperber, Hans
McGraw-Hill, 1962
Buku Teks
edited by Stephen K. Bailey
United States Information Agency, 1973
Buku Teks
Charles Scribner's Sons, 1964
Buku Referensi
editor Thomas C. Cochran, Wayne Andrew
Charles Scribner's Sons , 1962
Buku Referensi
Charles Scribner's Sons, 1976
Buku Referensi