APA استشهاد

Ormell, C. (1968). Introduction to probability and statistics: Including teachers guide. Oliver & Boyd Ltd.

استشهاد بنمط شيكاغو

Ormell, C.P. Introduction to Probability and Statistics: Including Teachers Guide. London: Oliver & Boyd Ltd, 1968.

MLA استشهاد

Ormell, C.P. Introduction to Probability and Statistics: Including Teachers Guide. Oliver & Boyd Ltd, 1968.