Charles T. Roman, editor
Island Press, 2012
eBooks
Elsevier, 1992
Buku Teks
Chiras, Daniel D., author
The Benyamin/Cumings Publishing Company, 1985
Buku Teks
Chiras, Daniel D., author
Pearson, 2014
Buku Teks
Greenland, David, author
Charles E. Merrill, 1983
Buku Teks