APA (7th ed.) Citation

Teilhard de Chardin, P., & Engels, C. (1970). Toujours en avant. Desclee.

Chicago Style (17th ed.) Citation

Teilhard de Chardin, Pierre, and Charlotte Engels. Toujours En Avant. Paris: Desclee, 1970.

MLA (8th ed.) Citation

Teilhard de Chardin, Pierre, and Charlotte Engels. Toujours En Avant. Desclee, 1970.

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