APA (7th ed.) Citation

R. E. Allen & Peter Bull. (1998). The Oxford primary school dictionary. Oxford University Press.

Chicago Style (17th ed.) Citation

R. E. Allen and Peter Bull. The Oxford Primary School Dictionary. London: Oxford University Press, 1998.

MLA (9th ed.) Citation

R. E. Allen and Peter Bull. The Oxford Primary School Dictionary. Oxford University Press, 1998.