Παραπομπή APA

Eby, F. H., & O'neill, W. J. (1977). Management of sales forecasting. Lexington.

Παραπομπή Chicago Style

Eby, Frank H., και William J. O'neill. Management of Sales Forecasting. Lexington: Lexington, 1977.

Παραπομπή MLA

Eby, Frank H., και William J. O'neill. Management of Sales Forecasting. Lexington, 1977.