Asimov, Isaac, author
Doubleday, 1986
Buku Teks
Carritt, E. F.
At The Clarendon Press, 1935
Buku Teks
Das, Braja M., author
Cengage Learning, 2011
Buku Teks
Hein, Morris
"Monterey: Brooks Cole, 1984",
Buku Teks
Spouse, Jenny, author
Churchill Livingstone, 2008
Buku Teks