APA-viite (7. p.)
ebrary, Inc, & Bertka, C. M. (2009). Exploring the origin, extent, and future of life: Philosophical, ethical, and theological perspectives. Cambridge University Press.
Chicago-viite (17. p.)
ebrary, Inc, ja Constance M. Bertka. Exploring the Origin, Extent, and Future of Life: Philosophical, Ethical, and Theological Perspectives. Cambridge: Cambridge University Press, 2009.
MLA-viite (9. p.)
ebrary, Inc, ja Constance M. Bertka. Exploring the Origin, Extent, and Future of Life: Philosophical, Ethical, and Theological Perspectives. Cambridge University Press, 2009.
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