Peterson, Lee Allen, author
Houghton Miffiln, 1977
Buku Teks
Angier, Bradford, author
Stackpole Books, 1992
Buku Teks
Peterson, Roger Tory, author
Houghton Miffiln, 1980
Buku Referensi
Clark, William S., author
Houghton-Miffiln, 1987
Buku Teks
Robins, C. Richard, author
Houghton-Miffiln, 1986
Buku Teks