Amabile, T. (1985). Motivation and creativity: Effects of motivational orientation on creative writers. Journal of Personality and Social Psychology, 48(2), 393–399.
Freedman, N. D., Park, Y., Abnet, C. C., Hollenbeck, A. R., & Sinha, R. (2012). Association of coffee drinking with total and cause-specific mortality. New England Journal of Medicine, 366, 1891–1904.
Hamlin, J. K., Wynn, K., & Bloom, P. (2007). Social evaluation by preverbal infants. Nature, 452 (22), 557–560.
Ramsey, F., & Schafer, D. (2002). The statistical sleuth: A course in methods of data analysis. Belmont, CA: Duxbury.
Short, T., Moriarty, H., & Cooley, M. E. (1995). Readability of educational materials for patients with cancer. Journal of Statistics Education, 3(2).