APA
Gregg R. B., . (1966). The power of nonviolence. New York: Schocken Books.
Chicago
Gregg Richard Bartlett, . 1966. The power of nonviolence. New York: Schocken Books.
Harvard
Gregg R. B., . (1966). The power of nonviolence. New York: Schocken Books.
MLA
Gregg Richard Bartlett, . The power of nonviolence. New York: Schocken Books. 1966.