APA (7th ed.) Citation

Tietze, H. (1965). Famous problems of mathematics. Graylock Press.

Chicago Style (17th ed.) Citation

Tietze, Heinrich. Famous Problems of Mathematics. Baltimore: Graylock Press, 1965.

MLA (9th ed.) Citation

Tietze, Heinrich. Famous Problems of Mathematics. Graylock Press, 1965.

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