ebrary, Inc, Doolan, G. T., & Wippel, J. F. (2012). The science of being as being: Metaphysical investigations. Catholic University of America Press.
Chicago-referens (17:e uppl.)ebrary, Inc, Gregory T. Doolan, och John F. Wippel. The Science of Being as Being: Metaphysical Investigations. Washington, DC: Catholic University of America Press, 2012.
MLA-referens (9:e uppl.)ebrary, Inc, et al. The Science of Being as Being: Metaphysical Investigations. Catholic University of America Press, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.