Coon, Dennis, author
MA Cengage Learning, 2016
Buku Teks
Enos, Matthew, author
Wadsworth, 2002
Buku Teks
Nietzel, Michael T., author
Prentice-Hall, 1998
Buku Teks
edited by Linda Steg, Agnes E. van den Berg, Judith I.M. de Groo
BPS Blackwell, 2013
Buku Teks
Edward E. Smith ... [and others]
Thomson, 2003
Buku Teks