Eldon D. Enger, Andrew H. Gibson, J. Richard Kormelink, Frederick C. Ross, Rodney J. Smith
W.C Brown, 1976
Buku Teks
Reithel, Francis J., author
McGraw-Hill, 1967
Buku Teks
Olson, Everett C., author
Charles E. Merrill, 1975
Buku Teks
Lightstone, A. H., author
Harper & Row, 1965
Buku Teks
Kormondy, Edward J.
Prentice-Hall, 1976
Buku Teks