Cita APA (7a ed.)

Mason, R. D., & Hermanson, R. H. (1970). Programmed learning aid for business and economic statistics. Learning Systems.

Cita Chicago Style (17a ed.)

Mason, Robert D., y Roger H. Hermanson. Programmed Learning Aid for Business and Economic Statistics. Homewood, Illinois: Learning Systems, 1970.

Cita MLA (9a ed.)

Mason, Robert D., y Roger H. Hermanson. Programmed Learning Aid for Business and Economic Statistics. Learning Systems, 1970.