Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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