edited by Heinz Katschnig, Hugh Freeman and Norman Sartorius
John Wiley & Sons, 2006
Buku Teks
Drew, Clifford J.
A Bell & Howell Company, 1986
Buku Teks
Gribbin, John
Penguin Books, 1997
Buku Teks
by William K. Purves ... [et al.]
Salt lake City Sinauer Associates , 1998
Buku Teks
Belk, Collen
Pearson - Benjamin Cummings, 2008
Buku Teks