APA (7th ed.) Citation

Unesco & Dickson, B. T. (1957). Guide book to research data for arid zone development. Unesco.

Chicago Style (17th ed.) Citation

Unesco and B. T. Dickson. Guide Book to Research Data for Arid Zone Development. Paris: Unesco, 1957.

MLA (8th ed.) Citation

Unesco and B. T. Dickson. Guide Book to Research Data for Arid Zone Development. Unesco, 1957.