APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Dorrie, Heinrich. 100 Great Problems of Elementary Mathematics: Their History and Solution. New York: Dover Publications, 1965.

MLA (9th ed.) Citation

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

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