Cita APA (7th ed.)

Ruskin, J., & Clark, K. (1967). Ruskin today. Penguin.

Cita Chicago (17th ed.)

Ruskin, John, i Kenneth Clark. Ruskin Today. Harmondsworth: Penguin, 1967.

Cita MLA (8th ed.)

Ruskin, John, i Kenneth Clark. Ruskin Today. Penguin, 1967.