edited by Anthony Ralston; assistant editor, Chester L. Meek
Petrocelli/Charter, 1976
Buku Referensi
Jordan, Philip B.
McGraw-Hill, 1969
Buku Referensi
Thompson Gale, 2005
Buku Teks
edited by Adam Kuper and Jessica Kuper
Routledge, 1996
Buku Referensi
editor, in.chief, R.P. Jain; editors, V.K. Gendhi, Artul Amand, Anuj Kohli, Anil Sharga
Crest Publishing House, 1998,
Buku Referensi