APA

McCallum G. P., . (1980). 101 Word Games. Oxford: Oxford University Press.

Chicago

McCallum G P, . 1980. 101 Word Games. Oxford: Oxford University Press.

Harvard

McCallum G. P., . (1980). 101 Word Games. Oxford: Oxford University Press.

MLA

McCallum G P, . 101 Word Games. Oxford: Oxford University Press. 1980.