Puckey, Walter, Sir
Hutchinson of London, 1969
Buku Referensi
Davies, David B.
McGraw-Hill, 1985
Buku Teks SO
Robichek, Alexander A.
Prentice-Hall, 1965
Buku Teks SO
Wavell, Stawart
Souvenir Press, 1986
Buku Teks SO
Stewart, Rosemary
McGraw-Hill, 1976
Buku Teks