Academic Press. inc, 2018
Majalah, Jurnal, Buletin
Waite, Mitchell, author
H.W. Sams, 1980
Buku Teks
Barden, William Jr., author
Howard W. Sams & Co., 1978
Buku Referensi
Swanson, Paul, author
McGraw-Hill, 1982
Buku Teks
Sanderson, Peter C., author
Butterworth, 1980
Buku Teks