Doubleday, 1982
Buku Referensi
Charles Scribner's Sons, 1964
Buku Referensi
editor Thomas C. Cochran, Wayne Andrew
Charles Scribner's Sons , 1962
Buku Referensi
Segen, Joseph
McGraw-Hill, 2006
Buku Referensi
Burickson, Sherwin, author
Philosophical Library, 1959
Buku Referensi