APA

Boulle P., . (1960). A noble profession. New York: Vanguard Press.

Chicago

Boulle Pierre, . 1960. A noble profession. New York: Vanguard Press.

Harvard

Boulle P., . (1960). A noble profession. New York: Vanguard Press.

MLA

Boulle Pierre, . A noble profession. New York: Vanguard Press. 1960.