edited by Willi Semmler
Kluwer, 1994
Buku Teks
Hald, Earl C., author
Houghton-Mifflin, 1954
Buku Teks
Matthews, R.C.O., author
University of Chicago Press, 1959
Buku Teks
Achinstein, Asher, author
Thomas Y. Crowell, 1950
Buku Teks
selected by a committee of the American Economic Association
Blakiston, 1951
Buku Teks