APA

Poirson S., Regnal M. G., . (1911). La co-education. Paris: [s.n.].

Chicago

Poirson S, Regnal Mª Georges, . 1911. La co-education. Paris: [s.n.].

Harvard

Poirson S., Regnal M. G., . (1911). La co-education. Paris: [s.n.].

MLA

Poirson S, Regnal Mª Georges, . La co-education. Paris: [s.n.]. 1911.