edited by Brigadier Peter Young
Hamlyn, 1981
Buku Referensi
Young, Peter
Bison Books, 1985
Buku Referensi
Heimann, Eduard
Charles Scribner`s Sons, 1947
Buku Teks
Buchanan, Albert Russell
Harper & Row, 1964
Buku Teks
Gallagher, Matthew P.
Frederick A. Preager, 1963
Buku Teks