Day, R. R., Shaules, J., & Yamanaka, J. (2003). Impact values! 30 discussion topics to help you explore your own values. AUWSF.
Lua i Stíl Chicago (17ú heag.)Day, Richard R., Joseph Shaules, agus Junko Yamanaka. Impact Values! 30 Discussion Topics to Help You Explore Your Own Values. Hongkong: AUWSF, 2003.
Lua MLA (9ú heag.)Day, Richard R., et al. Impact Values! 30 Discussion Topics to Help You Explore Your Own Values. AUWSF, 2003.
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