Ayres, Frank, 1901-1994, author
Mc Graw Hill, 2009
Buku Teks
Bartle, Robert Gardner, 1927-, author
Scott, Foresman, 1968
Buku Teks
Sherwood, G. E. F.
Prentice-Hall, 1946
Buku Teks
Ayres, Frank, 1901-1994, author
[publisher not identified], [date of publication not identified]
Buku Teks
Stewart, James, 1941-, author
Brooks/Cole, 1991
Buku Teks