Estey, James Arthur
Business cycle : their nature, cause, and control
Prentice-Hall, 1949
 Buku Teks
Estey, James Arthur
Business cycles : their nature, cause and control / James Arthur Estey
Prentice-Hall, 1956
 Buku Teks
Hald, Earl C.
Business cycles
Houghton-Mifflin, 1954
 Buku Teks
Matthews, R.C.O.
The business cycle
University of Chicago Press, 1959
 Buku Teks
Achinstein, Asher
Introduction to business cycles
Thomas Y. Crowell, 1950
 Buku Teks