edited by Gilbert Rozman
California Stanford University Press, 2013
Buku Teks
2009
Artikel Jurnal
Fincher, E. B., author
Abelard-Schuman, 1955
Buku Teks
by A. F. Gustafson [and others]
Comstock Publishing Associates, 1961
Buku Teks
Myers, Gustavus, author
Random House, 1943
Buku Teks