Bernstein, Lewis
Norwalk Appletton century crofts , 1985
Buku Teks SO
Parkin, Alan C.
John Wiley & Sons, 1999
Buku Teks SO
Ross, Martin J.
A Fawcett Crest Book, 1975
Buku Teks
Ross, Martin J.
A Fawcett Crest Book, 1967
Buku Teks
Pedley, Paul
Facet, 2006
Buku Teks SO