Sargent, Lyman Tower, author
Thomson Wadsworth , 2006
Buku Teks
Daly, L. J.
Loyola University Press, 1962
Buku Teks
Friedrich, Carl Joachim
McGraw-Hill, 1963
Buku Teks
edited by Brian Doherty and Marius de Geus
Routledge, 1996
Buku Teks
Barber, James David
Markaham, 1970
Buku Teks