Crow, Lester D
Macmillan, 1964
Buku Teks
Fulmer, Robert M., author
Richard D. Irwin , 1983
Buku Teks
Mitchell, W., author
Macmillan, 1973
Buku Teks
Leat, Mike, author
Butterworth-Heinemann, 2007
Buku Teks
Hope, Terry, author
RotoVision SA, 2001
Buku Teks