The two paths;
Lectures of architecture and painting, pre-Raphaelitism, and notes on the Turner gallery.

APA Citation

Ruskin, J. (1908). The two paths: Lectures of architecture and painting, pre-Raphaelitism, and notes on the Turner gallery. London: Cassell.

MLA Citation

Ruskin, John, 1819-1900. The Two Paths: Lectures of Architecture And Painting, Pre-Raphaelitism, And Notes On the Turner Gallery. London: Cassell, 1908.

Warning: These citations may not always be complete (especially for serials).