APA (7th ed.) Citation

Poniachik, J., & Poniachik, L. (1998). Hard-to-solve brainteasers. Sterling Pub. Co..

Chicago Style (17th ed.) Citation

Poniachik, Jaime, and Lea Poniachik. Hard-to-solve Brainteasers. New York: Sterling Pub. Co., 1998.

MLA (9th ed.) Citation

Poniachik, Jaime, and Lea Poniachik. Hard-to-solve Brainteasers. Sterling Pub. Co., 1998.