APA

Ruskin J., . (1885). The elements of drawing. New York: Wiley.

Chicago

Ruskin John, . 1885. The elements of drawing. New York: Wiley.

Harvard

Ruskin J., . (1885). The elements of drawing. New York: Wiley.

MLA

Ruskin John, . The elements of drawing. New York: Wiley. 1885.