APA (7th ed.) Citation

Brock, P. (1970). Twentieth century pacifism. van Nostrand.

Chicago Style (17th ed.) Citation

Brock, Peter. Twentieth Century Pacifism. New York: van Nostrand, 1970.

MLA (9th ed.) Citation

Brock, Peter. Twentieth Century Pacifism. van Nostrand, 1970.