Walker, Allan S.
Australian War Memorial, 1957
Buku Teks SO
Ronald E. Rice, Charles K. Atkin, editor
Sage Publications, Inc., 2001
Buku Teks SO
Roman, Murray
McGraw-Hill, 1983
Buku Teks SO
Brady, S.G.
Stackpole, 1963
Buku Teks SO
Coleman, Rodney
George Allen & Unwin, 1974
Buku Teks SO