APA (7th ed.) Citation

Beaumont, P., Blake, G. H., & Wagstaff, J. M. (1976). The Middle East: A geographical study. Wiley.

Chicago Style (17th ed.) Citation

Beaumont, Peter, Gerald Henry Blake, and John Malcolm Wagstaff. The Middle East: A Geographical Study. London [u.a.]: Wiley, 1976.

MLA (8th ed.) Citation

Beaumont, Peter, et al. The Middle East: A Geographical Study. Wiley, 1976.