Sass, John E., author
Iowa State University Press, 1994
Buku Teks
Berlyn, Graeme P., author
Iowa State University Press, 1976
Buku Teks
edited by Peter Gray
Van Nostrand Reinhold, 1973
Buku Referensi
editor, Roy Upton ...[et al.]
CRC Press, 2011
Buku Teks
Fahn, A.
Gadjah Mada Univ. Press , 1992
Buku Teks