Cita APA (7th ed.)

Johnson, D., & King, M. (1988). BASIC forecasting techniques. Butterworths.

Cita Chicago (17th ed.)

Johnson, David, i Malcolm King. BASIC Forecasting Techniques. London: Butterworths, 1988.

Cita MLA (9th ed.)

Johnson, David, i Malcolm King. BASIC Forecasting Techniques. Butterworths, 1988.