APA (7e ed.) Bronvermelding

Toolan, D. S. (1991). Nature is a Heraclitean fire: Reflections on cosmology in an ecological age. Seminar on Jesuit Spirituality.

Chicago (17e ed.) Bronvermelding

Toolan, David S. Nature Is a Heraclitean Fire: Reflections on Cosmology in an Ecological Age. St. Louis, MO: Seminar on Jesuit Spirituality, 1991.

MLA (8e ed.) Bronvermelding

Toolan, David S. Nature Is a Heraclitean Fire: Reflections on Cosmology in an Ecological Age. Seminar on Jesuit Spirituality, 1991.