APA (7th ed.) Citation

C. G. C. (1891). The Cary letters. Printed at the Riverside Press.

Chicago Style (17th ed.) Citation

C. G. C. The Cary Letters. Cambridge [England]: Printed at the Riverside Press, 1891.

MLA (9th ed.) Citation

C. G. C. The Cary Letters. Printed at the Riverside Press, 1891.