Gosden, Chris
Cambridge University Press, 2006
Buku Teks
edited by Nico Bleichrodt, Pieter J.D. Drenth
Swets & Zeitlinger , 1991
Buku Teks
Letta, Corrado G.M.
Program Pascasarjana Universitas Indonesia, 2006
Artikel Jurnal
Milner, Andrew
Routledge, 2002
Buku Teks
Howard, Michael C.
HarperCollins, 1993
Buku Teks