Weinstein, Sidney (December 1957). "The Perception of Depth in the Absence of Texture-Gradient". The American Journal of Psychology. 70 (4): 611–615. doi:10.2307/1419453. JSTOR1419453. PMID13487832.
Weinstein, Sidney (December 1957). "The Perception of Depth in the Absence of Texture-Gradient". The American Journal of Psychology. 70 (4): 611–615. doi:10.2307/1419453. JSTOR1419453. PMID13487832.
Weinstein, Sidney (December 1957). "The Perception of Depth in the Absence of Texture-Gradient". The American Journal of Psychology. 70 (4): 611–615. doi:10.2307/1419453. JSTOR1419453. PMID13487832.