APA (7th ed.) Citation

White, J., White, J., & Walters, S. M. (2005). Trees: A field guide to the trees of Britain and Northern Europe. Oxford University Press.

Chicago Style (17th ed.) Citation

White, John, Jill White, and S. M. Walters. Trees: A Field Guide to the Trees of Britain and Northern Europe. Oxford ; New York: Oxford University Press, 2005.

MLA (9th ed.) Citation

White, John, et al. Trees: A Field Guide to the Trees of Britain and Northern Europe. Oxford University Press, 2005.