APA (7th ed.) Citation

Ruhemann, M. (1949). The separation of gases (2d ed.). Clarendon Press.

Chicago Style (17th ed.) Citation

Ruhemann, Martin. The Separation of Gases. 2d ed. Oxford: Clarendon Press, 1949.

MLA (8th ed.) Citation

Ruhemann, Martin. The Separation of Gases. 2d ed. Clarendon Press, 1949.