Ritland, R. M. (1970). A Search for Meaning in Nature: Anew look at creation and evolution. Pacific Press Publishing Association.
Citace podle Chicago (17th ed.)Ritland, Richard M. A Search for Meaning in Nature: Anew Look at Creation and Evolution. Montain View, Califirnia: Pacific Press Publishing Association, 1970.
Citace podle MLA (9th ed.)Ritland, Richard M. A Search for Meaning in Nature: Anew Look at Creation and Evolution. Pacific Press Publishing Association, 1970.
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