Moten, Abdul Rashid
Thomson, 2006
Buku Teks
Roskin, Michael G., 1939-
Pearson, 2017
Buku Teks
by Carlton Clymer Rodee [and others]
McGraw-Hill, 1983
Buku Teks
Rodee, Carlton Clymer
McGraw-Hill, 1983
Buku Teks
edited David Marsh and Gerry Stoker
Macmillan, 1995
Buku Teks