APA (7th ed.) Citation

Xerox of letter found in 'Operum mathematicorum' by John Wallis.

Chicago Style (17th ed.) Citation

Xerox of Letter Found in 'Operum Mathematicorum' by John Wallis.

MLA (9th ed.) Citation

Xerox of Letter Found in 'Operum Mathematicorum' by John Wallis.

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