Kidd
Cambridge University Press, 1973
Buku Teks
Chard, Chester S.
McGraw-Hill, 1975
Buku Teks
Eagle, Chester
McPhee Gribble/Penguins Books, 1985
Buku Teks
Williams, Duncan
Delta Book , 1971
Buku Teks
Duncan, Alastair
Thames and Hudson , 1994
Buku Teks