Citazione APA

Johnson, E., & Krooss, H. E. (1960). American economy: An introduction to economics. Prentice-hall.

Stile di citazione Chicago

Johnson, E.A.J, e Herman E. Krooss. American Economy: An Introduction to Economics. New Jersey: Prentice-hall, 1960.

Citazione MLA

Johnson, E.A.J, e Herman E. Krooss. American Economy: An Introduction to Economics. Prentice-hall, 1960.