Kaluski, Marian
Australasian Educa Press,, 1985
Buku Teks
Ingold, Tim, 1948-, author
Routledge, 2015
Buku Teks
Brohet, Michael Julius, author
Universitas Indonesia, 2005
UI - Skripsi (Membership)
Hobson, J.A.
Macmillan, 1922
Buku Teks
Arlin, Marian Thompson
MacMillan Company, 1972
Buku Teks