Original sentence: A definitive two-volume biography by Tim Hilton appeared as John Ruskin: The Early Years (Yale University Press, 1985) and John Ruskin: The Later Years (Yale University Press, 2000..j
Edited sentence: A definitive two-volume biography by Tim Hilton appeared as John Ruskin: The Early Years (Yale University Press, 1985) and John Ruskin: The Later Years (Yale University Press, 2000)