Merrifield, Leroy S., author
Michie, 1994
Buku Teks
Strecker, David E., author
CRC Press Taylor & Francis Group, 2011
Buku Teks
Farley, Miriam S., author
The John Day, 1950
Buku Teks
Gould, William B., IV, author
MIT Press, 1982
Buku Teks
Leslie, Douglas L., author
West Publishing, 1992
Buku Teks