Daniel, F.
Oxford Univ. Press , 1969
Buku Teks
Donatelle, Rebecca J., author
Pearson, 2014
Buku Teks
Hahn, Dale B., author
McGraw-Hill, 2002
Buku Teks
Hahn, Dale B.
McGraw-Hill, 2003
Multimedia
Gandhi, M.K., 1869-1948, author
Navajivan, 1948
Buku Teks