@book{25157,
	author = {Guptill, Arthur L. and Meyer, Susan E.},
	title = {Rendering in pencil /},
	publisher = {Watson-Guptill,},
	year = {1977.},
	address = {New York :},
	note = {Rev. ed. of the author's Sketching and rendering in pencil and Pencil drawing step-by-step.}
}