Dixon, Ruth B., author
Published for Resources for the Future by the Johns Hopkins Press, 1978
Buku Teks
Evans, Neus, author
Springer, 2015
Buku Teks
Chulalongkorn University, 1981
Buku Teks
Malassis, Louis
Croom Helm , 1976
Buku Teks
edited by Michael M. Cernea
Oxford Universiy Press, 1985
Buku Referensi