Παραπομπή APA

Ord, J. K., & Fildes, R. (2013). Principles of business forecasting. South-Western Cengage Learning.

Παραπομπή Chicago Style

Ord, J. K., και Robert Fildes. Principles of Business Forecasting. Mason, OH: South-Western Cengage Learning, 2013.

Παραπομπή MLA

Ord, J. K., και Robert Fildes. Principles of Business Forecasting. South-Western Cengage Learning, 2013.