Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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