Owens, Richard Norman
Prentice-Hall, 1951
Buku Teks
Risjord, Norman K., author
Prentice-Hall, 1985
Buku Teks
Hamby, Alonzo L.
Weybright and Talley, 1976
Buku Teks
Chafe, William Henry
Oxford University Press, 1995
Buku Teks
Whiffen, Marcus
MIT Press, 1992
Buku Teks