Latchman, David S.
Taylor and Francis, 2006
Buku Teks
Ullmann, Manfred
Edinburgh University Press, 1978
Buku Teks SO
Hahn,Milton E.
McGraw-Hill Book Co., 1955
Buku Teks SO
Stuart MacNeill, editor
[, Springer], 2012
eBooks
Lindeman, Ralph D
Twayne Publishing, 1965
Buku Teks