Dyfyniad APA

Dubisch, R. The Nature of number: An approach to basic ideas of modern mathematics. The Ronald Press Company.

Dyfyniad Arddull Chicago

Dubisch, Roy. The Nature of Number: An Approach to Basic Ideas of Modern Mathematics. New York: The Ronald Press Company.

Dyfyniad MLA

Dubisch, Roy. The Nature of Number: An Approach to Basic Ideas of Modern Mathematics. The Ronald Press Company.

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