APA (7th ed.) Citation

Steen, L. A. (1978). Mathematics Today Twelve Informal Essays. Springer New York.

Chicago Style (17th ed.) Citation

Steen, Lynn Arthur. Mathematics Today Twelve Informal Essays. New York, NY: Springer New York, 1978.

MLA (9th ed.) Citation

Steen, Lynn Arthur. Mathematics Today Twelve Informal Essays. Springer New York, 1978.

Warning: These citations may not always be 100% accurate.