Ebenstein, William, author
Rinehart, 1963
Buku Teks
Ebenstein, William, author
Thomson Learning, 2000
Buku Teks
Ebenstein, William, author
Rinehart, 1960
Buku Teks
Burke
Avon Book Division, 1965
Buku Teks
David Boucher, Paul Kelly, editor
Oxford Univesity Press, 2009
Buku Teks