APA (7th ed.) Citation

Nys, D. (1929). La Notion d'espace (Deuxieme edition.). Emile Warny.

Chicago Style (17th ed.) Citation

Nys, D. La Notion D'espace. Deuxieme edition. Louvain: Emile Warny, 1929.

MLA (9th ed.) Citation

Nys, D. La Notion D'espace. Deuxieme edition. Emile Warny, 1929.