Lukas, M., Lukas, E., & Teilhard de Chardin, P. (2013). Teilhard de Chardin, Pierre - Lukas, Ellen and Mary, Collection. DigitalGeorgetown.
Lua i Stíl Chicago (17ú heag.)Lukas, Mary, Ellen Lukas, agus Pierre Teilhard de Chardin. Teilhard De Chardin, Pierre - Lukas, Ellen and Mary, Collection. Washington, D.C.: DigitalGeorgetown, 2013.
Lua MLA (8ú heag.)Lukas, Mary, et al. Teilhard De Chardin, Pierre - Lukas, Ellen and Mary, Collection. DigitalGeorgetown, 2013.
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