Style de citation APA (7e éd.)

Armstrong, E. A. (1973). Saint Francis: Nature mystic. University of California Press.

Style de citation Chicago (17e éd.)

Armstrong, Edward Allworthy. Saint Francis: Nature Mystic. Berkeley: University of California Press, 1973.

Style de citation MLA (9e éd.)

Armstrong, Edward Allworthy. Saint Francis: Nature Mystic. University of California Press, 1973.