Lauder, Allan F.
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2010
Artikel Jurnal
edited by Sylviane Granger, Magali Paquo
Oxford University press, 2012
Buku Teks SO
Ballard, Dana H.
Prentice-Hall, 1982
Buku Teks
Sloman, Morris
Prentice-Hall, 1987
Buku Teks SO
Bowers, James C.
Prentice-Hall, 1971
Buku Teks