APA

Leech H., Holmes E., . (1973). The joys of watercolor. New York: Van Nostrand Reinhold Co.

Chicago

Leech Hilton, Holmes Emily, . 1973. The joys of watercolor. New York: Van Nostrand Reinhold Co.

Harvard

Leech H., Holmes E., . (1973). The joys of watercolor. New York: Van Nostrand Reinhold Co.

MLA

Leech Hilton, Holmes Emily, . The joys of watercolor. New York: Van Nostrand Reinhold Co. 1973.