Achinstein, A. (1950). Introduction to business cycles. Thomas Y. Crowell-Company.
Chicago Style aipamenaAchinstein, Asher. Introduction to Business Cycles. Thomas Y. Crowell-Company, 1950.
MLA aipamenaAchinstein, Asher. Introduction to Business Cycles. Thomas Y. Crowell-Company, 1950.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.