APA (7th ed.) Citation

Clarke, L. H., & Norton, F. G. J. (1969). Objective tests in ordinary level mathematics. Heinemann Educational.

Chicago Style (17th ed.) Citation

Clarke, Leonard Harwood, and F. G. J. Norton. Objective Tests in Ordinary Level Mathematics. London: Heinemann Educational, 1969.

MLA (9th ed.) Citation

Clarke, Leonard Harwood, and F. G. J. Norton. Objective Tests in Ordinary Level Mathematics. Heinemann Educational, 1969.