Salisbury, Alan B., author
Elsevier, 1976
Buku Teks
Fry, T. F., author
Butterworth, 1981
Buku Teks
Hartley, Michael G.
McGraw-Hill, 1978
Buku Teks
Giarratano, Joseph C., author
Howard W. Sams, 1982
Buku Teks
Wooldridge, Susan, author
Petrocelli Books, 1974
Buku Teks