Jansson, Bruce S., author
Cengage Learning, 2018
Buku Teks
Ellis, Rodney A., author
Thomson, 2003
Buku Teks
Barusch, Amanda Smith, author
Thomson Brooks/Cole, 2006
Buku Teks
A Spectrum book, 1961
Buku Teks
Stein, Theodore J., author
Columbia University Press, 2001
Buku Teks