APA (7th ed.) Citation

Cajori, F. William Oughtred: A Great Seventeenth-Century Teacher of Mathematics.

Chicago Style (17th ed.) Citation

Cajori, Florian. William Oughtred: A Great Seventeenth-Century Teacher of Mathematics.

MLA (9th ed.) Citation

Cajori, Florian. William Oughtred: A Great Seventeenth-Century Teacher of Mathematics.

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