by Les Rowntree ... [and others]
Prentice-Hall, 2011
Buku Teks
Cole, J.P., author
Penguin Books, 1979
Buku Teks
edited by Frank E. Bair
Gale Research Inc., 1991
Buku Referensi
Jackson, Richard H., author
Wiley, 1986
Buku Teks
Jackson, Richard H., author
John Wiley & Sons, 1982
Buku Teks