APA (7th ed.) Citation

Sieveking, A., & Sieveking, G. d. G. (1962). The caves of France and northern Spain. Vista Books.

Chicago Style (17th ed.) Citation

Sieveking, Ann, and G. de G. Sieveking. The Caves of France and Northern Spain. London: Vista Books, 1962.

MLA (9th ed.) Citation

Sieveking, Ann, and G. de G. Sieveking. The Caves of France and Northern Spain. Vista Books, 1962.