APA (7th ed.) Citation

Dörrie, H. (1965). 100 great problems of elementary mathematics: Their history and solution. Dover Publ.

Chicago Style (17th ed.) Citation

Dörrie, Heinrich. 100 Great Problems of Elementary Mathematics: Their History and Solution. New York, NY: Dover Publ, 1965.

MLA (9th ed.) Citation

Dörrie, Heinrich. 100 Great Problems of Elementary Mathematics: Their History and Solution. Dover Publ, 1965.

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