APA (7th ed.) Citation

University of London, University of Oxford, & Hopwood, D. (1972). The Arabian peninsula: Society and politics. Allen and Unwin.

Chicago Style (17th ed.) Citation

University of London, University of Oxford, and Derek Hopwood. The Arabian Peninsula: Society and Politics. London: Allen and Unwin, 1972.

MLA (9th ed.) Citation

University of London, et al. The Arabian Peninsula: Society and Politics. Allen and Unwin, 1972.