APA (7th ed.) Citation

Ruskin, J. (2012). Modern painters (6th ed.). Forgotten Books.

Chicago Style (17th ed.) Citation

Ruskin, John. Modern Painters. 6th ed. [Lexington, Ky.]: Forgotten Books, 2012.

MLA (9th ed.) Citation

Ruskin, John. Modern Painters. 6th ed. Forgotten Books, 2012.