Nagatani, Keizo, author
North-Holland Publishing Company, 1978
Buku Teks
Rousseas, Stephen, author
Alfred A. Knopf, 1972
Buku Teks
edited by R.W. Clower
Pergamon Press, 1969
Buku Teks
Friedman, Avner, author
Academic Press, 1976
Buku Teks
Friedman, Robert D.
The Conservation Foundation, 1981
Buku Teks