Hornby,A S, Wehmeier, S., & Ashby, M. (2000). Oxford advanced learner's dictionary of current English (Sixth edition.). Oxford University Press.

Hornby,A S, Sally Wehmeier, and Michael Ashby. Oxford Advanced Learner's Dictionary of Current English. Sixth edition. Oxford ; New York: Oxford University Press, 2000.

Hornby,A S, et al. Oxford Advanced Learner's Dictionary of Current English. Sixth edition. Oxford University Press, 2000.