Willis, H. Lee
Marcel Dekker, 1997
Buku Teks
Stevenson, William D., author
McGraw-Hill, 1982
Buku Teks
edited by Arthur H. Seidman
McGraw-Hill, 1983
Buku Referensi
edited by Tyler G. Hicks
McGraw-Hill, 1986
Buku Referensi
Whitaker, Jerry C., author
CRC Press , 1998
Buku Referensi