Cita APA (7a ed.)

Hansen, W. G. (1971). St. Francis of Assisi: Patron of the environment. Franciscan Herald Press.

Cita Chicago Style (17a ed.)

Hansen, Warren G. St. Francis of Assisi: Patron of the Environment. Chicago, Ill.: Franciscan Herald Press, 1971.

Cita MLA (8a ed.)

Hansen, Warren G. St. Francis of Assisi: Patron of the Environment. Franciscan Herald Press, 1971.