Gaya APA

Toolan, D, S. (1991). 'Nature is a heraclitean fire': Reflections on cosmology in an ecological age. . St Louis: St Louis AAS on Jesuit Spirituality.

Gaya MLA

Toolan, David, S.. "'Nature is a heraclitean fire': Reflections on cosmology in an ecological age. ". St Louis: St Louis AAS on Jesuit Spirituality, 1991. Buku.