The elements of drawing,
in three letters to beginners /
by John Ruskin ; with illustrations drawn by the author.
Ruskin, J. (1859). The elements of drawing: in three letters to beginners. London: Smith, Elder.
Ruskin, John, 1819-1900. The Elements of Drawing: In Three Letters to Beginners. London: Smith, Elder, 1859.
Warning: These citations may not always be complete (especially for serials).