Dunn, Michael J., Stacey Brinton, and Lara Clark. "Universal Sex Differences in Online Advertisers Age Preferences: Comparing Data from 14 Cultures and 2 Religious Groups." Evolution and Human Behavior 31.6 (2010): 383-93. Web. 7 Sept. 2016.
Singh, Devendra, B.j. Dixson, T.s. Jessop, B. Morgan, and A.f. Dixson. "Cross-cultural Consensus for Waist–hip Ratio and Women's Attractiveness." Evolution and Human Behavior 31.3 (2010): 176-81. Web. 7 Sept. 2016.
Stephen, Ian D., Isabel Scott M.l., Vinet Coetzee, Nicholas Pound, David Perrett I., and Ian Penton-Voak S. "Cross-cultural Effects of Color, but Not Morphological Masculinity, on Perceived Attractiveness of Men's Faces." Evolution and Human Behavior 33.4 (2012): 260-67. Web. 7 Sept. 2016.
Singh, Devendra, B.j. Dixson, T.s. Jessop, B. Morgan, and A.f. Dixson. "Cross-cultural Consensus for Waist–hip Ratio and Women's Attractiveness." Evolution and Human Behavior 31.3 (2010): 176-81. Web. 7 Sept. 2016.
Stephen, Ian D., Isabel Scott M.l., Vinet Coetzee, Nicholas Pound, David Perrett I., and Ian Penton-Voak S. "Cross-cultural Effects of Color, but Not Morphological Masculinity, on Perceived Attractiveness of Men's Faces." Evolution and Human Behavior 33.4 (2012): 260-67. Web. 7 Sept. 2016.