Cita APA (7a ed.)

Chisholm, R. K., & Whitaker, G. R. (1972). Forecasting methods (3rd printing.). Richard D. Irwin [etc.].

Cita Chicago Style (17a ed.)

Chisholm, Roger K., y Gilbert R. Whitaker. Forecasting Methods. 3rd printing. Homewood (Illinois) [etc.]: Richard D. Irwin [etc.], 1972.

Cita MLA (9a ed.)

Chisholm, Roger K., y Gilbert R. Whitaker. Forecasting Methods. 3rd printing. Richard D. Irwin [etc.], 1972.