Παραπομπή APA

Johnson, E., & Kroos, E. (1960). American economy its origin, development and transformation: An introduction to economics. N.J Prentice Hall.

Παραπομπή Chicago Style

Johnson, E.A.J, και E. Kroos. American Economy Its Origin, Development and Transformation: An Introduction to Economics. N.J Prentice Hall, 1960.

Παραπομπή MLA

Johnson, E.A.J, και E. Kroos. American Economy Its Origin, Development and Transformation: An Introduction to Economics. N.J Prentice Hall, 1960.