O`Leary, Marion H.
McGraw-Hill, 1976
Buku Teks
McMurry, John
Brooks/Cole, 2007
Buku Teks
McMurry, John
Cole Publ.Com, 1992
Buku Teks
Carey, Francis A., 1937-
McGraw-HIll, 2003
Buku Teks
Beyer, Hans
[Publisher not identified], [Date of publication not identified]
Buku Teks