Ernest W. Watson's Course in pencil sketching :
four books in one /
Ernest W. Watson

APA Citation

Watson, E. William., Watson, E. William. (1978). Ernest W. Watson's Course in pencil sketching: four books in one. New York: Van Nostrand Reinhold Co..

MLA Citation

Watson, Ernest William, 1884-1969, and Ernest William Watson. Ernest W. Watson's Course In Pencil Sketching: Four Books In One. New York: Van Nostrand Reinhold Co., 1978.

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