Rees, Martin
Basic Books , 1999
Buku Teks
Koupelis, Theo, author
Jones & Bartlett learning, 2011
Buku Teks
Abell, George O., author
Holt Rinehart and Winston, 1974
Buku Teks
Seeds, Michael A.
Wadsworth, 1981
Buku Teks
Wood, Harley
Angus and Robertson, 1967
Buku Teks