Sintak Gunawan
Departemen kewilayaan FIB Universitas Indonesia, 2009
Artikel Jurnal
editors, Raymond Daley and Henry Miller
Livingstone, 1971
Buku Teks
Soedarto, author
Airlangga University Press, 2002
Buku Teks
McHardy, K.C.; Duguid, K.P.; Jamieson, M.J.; Petrie, J. C.; Towler, H.M.A.
Churchill Livingstone , 1997
Buku Referensi
Rubenstein, David, author
Original Publishing., 1976
Buku Teks