Dyfyniad APA

Beach,E F. (1957). Economic models: An exposition. John Wiley and Sons.

Dyfyniad Arddull Chicago

Beach,E F. Economic Models: An Exposition. New York: John Wiley and Sons, 1957.

Dyfyniad MLA

Beach,E F. Economic Models: An Exposition. John Wiley and Sons, 1957.

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