APA (7th ed.) Citation

Ruhen, O. (1963). Mountains in the clouds. Angus & Robertson.

Chicago Style (17th ed.) Citation

Ruhen, Olaf. Mountains in the Clouds. London: Angus & Robertson, 1963.

MLA (9th ed.) Citation

Ruhen, Olaf. Mountains in the Clouds. Angus & Robertson, 1963.

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