Frank A. Fetter,
Economics Volume II: Modern Economic Problems
“ But a change of business conditions is constantly occurring that is of wider extent, that is of less accidental and of more rhythmic nature, and that appears to be the effect of slowly working and more general causes. The enterprise of a modern community, as a whole, "general business," moves along, in a wavelike manner, going through a somewhat regular series of changes that is called a business cycle. ”
