APA (7th ed.) Citation

Gerard, A. (1939). L'industrie. [S.l.]: [s.n.].

Chicago Style (17th ed.) Citation

Gerard, A.-S. L'industrie. [S.l.]: [s.n.], 1939.

MLA (8th ed.) Citation

Gerard, A.-S. L'industrie. [S.l.]: [s.n.], 1939.

Warning: These citations may not always be 100% accurate.