APA استشهاد

Harper, M. (1971). None can guess. Hodder and Stoughton.

استشهاد بنمط شيكاغو

Harper, Michael. None Can Guess. London: Hodder and Stoughton, 1971.

MLA استشهاد

Harper, Michael. None Can Guess. Hodder and Stoughton, 1971.