APA (7th ed.) Citation

Veblen, T. T., Young, K. R., & Orme, A. R. (2007). The physical geography of South America. Oxford University Press. https://doi.org/10.1093/oso/9780195313413.001.0001

Chicago Style (17th ed.) Citation

Veblen, Thomas T., Kenneth R. Young, and Antony R. Orme. The Physical Geography of South America. Oxford: Oxford University Press, 2007. https://doi.org/10.1093/oso/9780195313413.001.0001.

MLA (9th ed.) Citation

Veblen, Thomas T., et al. The Physical Geography of South America. Oxford University Press, 2007. https://doi.org/10.1093/oso/9780195313413.001.0001.