ebrary, Inc, Doolan, G. T., & Wippel, J. F. (2012). The science of being as being: Metaphysical investigations. Catholic University of America Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रebrary, Inc, Gregory T. Doolan, और John F. Wippel. The Science of Being as Being: Metaphysical Investigations. Washington, DC: Catholic University of America Press, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रebrary, Inc, et al. The Science of Being as Being: Metaphysical Investigations. Catholic University of America Press, 2012.
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