Quigley, Carroll
Macmillan, 1961
Buku Teks
Burns, Edward McNall, 1897-1972, author
W.W. Norton & Company, 1973
Buku Teks
Hsu, Francis L.K., author
Holt, Rinehart and Winston, 1969
Buku Teks
Burns, Edward McNall, 1897-1972, author
WW Norton, 1974
Buku Teks
Christopher, Dawson, author
Catholic University of America Press, 20001
Buku Teks