Walker, Allan S., author
Australian War Memorial, 1957
Buku Teks
Lee, Storrs W., author
Holt, Rinehart, 1966
Buku Teks
Kefala, Antigone, author
Hale & Iremonger, 1984
Buku Teks
Ronald E. Rice, Charles K. Atkin, editor
Sage Publications, Inc., 2001
Buku Teks
Medvic, Stephen K., author
Routledge, Taylor & Francis Group, 2018
Buku Teks