APA aipamena

Bratt, E. C. (1953). Business cycles and forecasting (4th ed.). Irwin.

Chicago Style aipamena

Bratt, Elmer Clark. Business Cycles and Forecasting. 4th ed. Homewood, Ill: Irwin, 1953.

MLA aipamena

Bratt, Elmer Clark. Business Cycles and Forecasting. 4th ed. Irwin, 1953.