APA (7th ed.) Citation

Sandifer, C. E. (2007). How Euler did it. Math. Assoc. of America.

Chicago Style (17th ed.) Citation

Sandifer, Charles Edward. How Euler Did It. Washington, DC: Math. Assoc. of America, 2007.

MLA (9th ed.) Citation

Sandifer, Charles Edward. How Euler Did It. Math. Assoc. of America, 2007.