Lewis, C. (2012). The illustrated guide to ducks and geese and other domestic fowl: How to choose them - how to keep them. Bloomsbury Pub Plc USA.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lewis, Celia. The Illustrated Guide to Ducks and Geese and Other Domestic Fowl: How to Choose Them - How to Keep Them. Bloomsbury Pub Plc USA, 2012.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lewis, Celia. The Illustrated Guide to Ducks and Geese and Other Domestic Fowl: How to Choose Them - How to Keep Them. Bloomsbury Pub Plc USA, 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.