Williams, H., Stanley, D., Allen, N., Ross, S., & Williams, H. (2011). Examining workgroup diversity effects: Does playing by the (group-retention) rules help or hinder? Behavior Research Methods, 43(2), pp. 508-521. doi:10.3758/s13428-010-0053-9

Williams, Helen, D.J Stanley, N.J Allen, S.J Ross, and H.M Williams. "Examining Workgroup Diversity Effects: Does Playing By the (group-retention) Rules Help or Hinder?" Behavior Research Methods 43, no. 2 (2011): 508-521.

Williams, Helen, et al. "Examining Workgroup Diversity Effects: Does Playing By the (group-retention) Rules Help or Hinder?" Behavior Research Methods 43.2 (2011): 508-521.