APA (7th ed.) Citation

Rubens, P. P. (1955). The letters of Peter Paul Rubens. Harvard Univ. Press.

Chicago Style (17th ed.) Citation

Rubens, Peter Paul. The Letters of Peter Paul Rubens. Cambridge, Mass: Harvard Univ. Press, 1955.

MLA (9th ed.) Citation

Rubens, Peter Paul. The Letters of Peter Paul Rubens. Harvard Univ. Press, 1955.