Kenna, Peter
Currency Press , 1977
Buku Teks
Wiskup, Mark, author
American Management Association, 2007
eBooks
Prokhovnik, S.J.
Melbourne University Press, 1967
Buku Teks
Butlin, S.J.
Australian War Memorial, 1955
Buku Teks
Durrell, Gerald, foreword
William Collins, 1983
Buku Teks