Oxford University Press, 2013
Buku Teks
Isaacs, David, 1950-, author
Wiley Blackwell, 2014
Buku Teks
French, Warron
New York Twayne Publisher 1963
Buku Teks
Byrne, John A.
Macmillan, 1986
Buku Teks
Laidler, David E.W.
Harper Collins College , 1993
Buku Teks