The The University of Chicago
The University of Chicago Press, 1972
Buku Teks
Fryer, D.W., author
McGraw-Hill, 1965
Buku Teks
PWN-Polish Scientiic Publishers, 1968
Buku Teks
Tinbergen, Jan, 1903-, author
McGraw-Hill, 1967
Buku Teks
The University of Chicago Press, 1977
Buku Teks