APA

Lowenfeld, Oeser, . (1939). The nature of creative activity, experimental and comparative studie s of visual and non-visual sources of drawing, painting, and sculpture by means of the artistic products of weak sighted and blind subjects an d of the art of different epochs and cultures. New York: Harcourt, Brace and Company.

Chicago

Lowenfeld, Oeser, . 1939. The nature of creative activity, experimental and comparative studie s of visual and non-visual sources of drawing, painting, and sculpture by means of the artistic products of weak sighted and blind subjects an d of the art of different epochs and cultures. New York: Harcourt, Brace and Company.

Harvard

Lowenfeld, Oeser, . (1939). The nature of creative activity, experimental and comparative studie s of visual and non-visual sources of drawing, painting, and sculpture by means of the artistic products of weak sighted and blind subjects an d of the art of different epochs and cultures. New York: Harcourt, Brace and Company.

MLA

Lowenfeld, Oeser, . The nature of creative activity, experimental and comparative studie s of visual and non-visual sources of drawing, painting, and sculpture by means of the artistic products of weak sighted and blind subjects an d of the art of different epochs and cultures. New York: Harcourt, Brace and Company. 1939.