APA (7th ed.) Citation

Gelca, R., & Andreescu, T. (2007). Putnam and Beyond. Springer US.

Chicago Style (17th ed.) Citation

Gelca, Răzvan, and Titu Andreescu. Putnam and Beyond. New York, NY: Springer US, 2007.

MLA (8th ed.) Citation

Gelca, Răzvan, and Titu Andreescu. Putnam and Beyond. Springer US, 2007.

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