Pacsy, Vivian A., author
McGraw-Hill, 1986
Buku Teks
Walker, C. J.
Macdonald and Evans, 1970
Buku Teks
Henke, Emerson O., author
PWS-Kent, 1991
Buku Teks
by Michael R. Ostrenga ... [et al.]
John Wiley & Sons, 1992
Buku Teks
Owler, L.W.J.
MacDonald and Evans , 1975
Buku Teks