edited by Sybil P. Parker
McGraw-Hill, 1997
Buku Referensi
Mason, Brian
W.H. Freeman, 1968
Buku Teks
Blackburn, William H.
W.C. Brown Publishers, 1988
Buku Referensi
Dana, Edward Salisbury
John Wiley & Sons, 1972
Buku Teks
Hibbard, M.J.
McGraw-Hill Irwin, 2001
Buku Teks