Cita APA (7th ed.)

SHENTON, J. P., MECKLER, A. M., & HERMANSON, R. H. (1975). Programmed learning aid for United States history since1865. Learning Systems.

Cita Chicago (17th ed.)

SHENTON, James P., Alan M. MECKLER, i Roger H. HERMANSON. Programmed Learning Aid for United States History Since1865. Illinois: Learning Systems, 1975.

Cita MLA (9th ed.)

SHENTON, James P., et al. Programmed Learning Aid for United States History Since1865. Learning Systems, 1975.