Cita APA (7a ed.)

Primack, M. L., & Willis, J. F. (1980). An economic history of the United States. The Benjamin/Cummings Publishing Company.

Cita Chicago Style (17a ed.)

Primack, Martin L.., y James Frederick Willis. An Economic History of the United States. Menlo Park [etc.]: The Benjamin/Cummings Publishing Company, 1980.

Cita MLA (9a ed.)

Primack, Martin L.., y James Frederick Willis. An Economic History of the United States. The Benjamin/Cummings Publishing Company, 1980.