APA (7th ed.) Citation

Houston, J. M., Roglic, J., & Clarke, J. I. (1971). The Western Mediterranean world: An introduction to its regional landscapes. Longman.

Chicago Style (17th ed.) Citation

Houston, J. M., J. Roglic, and John Innes Clarke. The Western Mediterranean World: An Introduction to Its Regional Landscapes. London: Longman, 1971.

MLA (9th ed.) Citation

Houston, J. M., et al. The Western Mediterranean World: An Introduction to Its Regional Landscapes. Longman, 1971.