Dyfyniad APA

Patterson, E. W. (1957). Cases and materials on contracts II (4th ed.). The Foundation Press, Inc.

Dyfyniad Arddull Chicago

Patterson, Edwin Wilhite. Cases and Materials on Contracts II. 4th ed. Chicago: The Foundation Press, Inc, 1957.

Dyfyniad MLA

Patterson, Edwin Wilhite. Cases and Materials on Contracts II. 4th ed. The Foundation Press, Inc, 1957.

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