APA

by a Carthusian, . (1955). They speak by silences. New York: Darton, Longmans and Todd.

Chicago

by a Carthusian, . 1955. They speak by silences. New York: Darton, Longmans and Todd.

Harvard

by a Carthusian, . (1955). They speak by silences. New York: Darton, Longmans and Todd.

MLA

by a Carthusian, . They speak by silences. New York: Darton, Longmans and Todd. 1955.