Rice, Bernard J.
Prindle, Weber & Schmidt, 1975
Buku Teks
Pignani, Tullio J.
Harcourt, Brace, and World, 1968
Buku Teks
Cameron, Edward A.
Reynal & Hitchock, 1941
Buku Teks
Brink, Raymond
D. Appleton-Century Co., 1940
Buku Teks
Buchanan, Herbert E.
Johnson Pub., 1926
Buku Teks