APA (7th ed.) Citation

Ore, O. (1974). Niels Henrik Abel: Mathematicien extraordinary. Chelsea Publ. Co.

Chicago Style (17th ed.) Citation

Ore, Oystein. Niels Henrik Abel: Mathematicien Extraordinary. New York: Chelsea Publ. Co, 1974.

MLA (9th ed.) Citation

Ore, Oystein. Niels Henrik Abel: Mathematicien Extraordinary. Chelsea Publ. Co, 1974.

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