Spiegel, Murray R.
Armico, 1979
Buku Teks
Armawi K. Mundit
Armico, 1986
Buku Teks
Bartle, Robert Gardner, 1927-
Scott, Foresman, 1968
Buku Teks
Sherwood, G.E.F.
Prentice-Hall, 1946
Buku Teks
Ayres, Frank, 1901-1994
[publisher not identified], [date of publication not identified]
Buku Teks