Knight, M. (1968). Pets and their problems: A guide for animal lovers. Heinemann.
Chicago Style (17. basım) AtıfKnight, Maxwell. Pets and Their Problems: A Guide for Animal Lovers. London: Heinemann, 1968.
MLA (8th ed.) AtıfKnight, Maxwell. Pets and Their Problems: A Guide for Animal Lovers. Heinemann, 1968.
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