Simkin, D., & Hastie, R. (1987). An Information-Processing Analysis of Graph Perception. Journal of the American Statistical Association, 82(398), 454. எஆசு:10.2307/2289447. Kosara, Robert. "In Defense of Pie Charts". Retrieved April 13, 2011.
Spence, Ian; Lewandowsky, Stephan (1 January 1991). "Displaying proportions and percentages". Applied Cognitive Psychology5 (1): 61–77. doi:10.1002/acp.2350050106.
eagereyes.org
Simkin, D., & Hastie, R. (1987). An Information-Processing Analysis of Graph Perception. Journal of the American Statistical Association, 82(398), 454. எஆசு:10.2307/2289447. Kosara, Robert. "In Defense of Pie Charts". Retrieved April 13, 2011.
