Nelson, Harold L.
The Foundation Press,Inc., 1978
Buku Teks
Nelson, Harold L.
The Foundation Press,Inc., 1973
Buku Teks
Nelson, Harold L.
The Foundation Press,Inc., 1969
Buku Teks
Gillmor, Donald M.
West Publishing Company, 1974
Buku Teks
Holsinger, Ralph L., author
McGraw-Hill, 1994
Buku Teks