Dyfyniad APA

Whiting,D P. (1978). International trade and payments. MacDonald and Evans Limited.

Dyfyniad Arddull Chicago

Whiting,D P. International Trade and Payments. Great Britain: MacDonald and Evans Limited, 1978.

Dyfyniad MLA

Whiting,D P. International Trade and Payments. MacDonald and Evans Limited, 1978.

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