APA (7th ed.) Citation

Gaudeffroy, P. (1924). L'erreur-obstacle. Vulliez.

Chicago Style (17th ed.) Citation

Gaudeffroy, Paul. L'erreur-obstacle. Porte-Percy, Joigny (Yonne): Vulliez, 1924.

MLA (8th ed.) Citation

Gaudeffroy, Paul. L'erreur-obstacle. Vulliez, 1924.