Cita APA (7th ed.)

Ruhemann, M. (1949). The separation of gases (2a. ed.). Oxford University.

Cita Chicago (17th ed.)

Ruhemann, M. The Separation of Gases. 2a. ed. Oxford: Oxford University, 1949.

Cita MLA (9th ed.)

Ruhemann, M. The Separation of Gases. 2a. ed. Oxford University, 1949.