Tinbergen, Jan, 1903-
McGraw-Hill, 1967
Buku Teks
PWN-Polish Scientiic Publishers, 1968
Buku Teks
edited by David F. Walker
John Wiley & Sons, 1980
Buku Teks
Fryer, D.W.
McGraw-Hill, 1965
Buku Teks
The The University of Chicago
The University of Chicago Press, 1972
Buku Teks