Warren, Carl S., author
South-Western College Publishing, 1996
Buku Teks
Warren, Carl S., author
Cengage Learning, 2014
Buku Teks
Davies, Charlotte Aull, author
Routledge, 1999
Buku Teks
editor, Stephen R. Gliessman
Springer-Verlag, 1990
Buku Teks
Beatty, Ken, author
Pearson Education, 2003
Buku Teks