Spengler, Joseph J. (Joseph John), 1902-1991, author
Duke Univrsity Press, 1979
Buku Teks
Brogan, D.W. (Denis William), author
Time, 1960
Buku Teks
Campbell, Joseph, author
Meredian Books, 1956
Buku Teks
Dunlop, John B, author
Princeton University Press, 1983
Buku Teks
Campbell, Joseph, author
Meridian Books , 1956
Buku Teks