APA (7th ed.) Citation

La Vallée Poussin, C. d. (2000). Collected works. Acad. Royale de Belgique.

Chicago Style (17th ed.) Citation

La Vallée Poussin, Charles-Jean de. Collected Works. [Bruxelles]: Acad. Royale de Belgique, 2000.

MLA (9th ed.) Citation

La Vallée Poussin, Charles-Jean de. Collected Works. Acad. Royale de Belgique, 2000.

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