Nicolai, O. (2017). In the woods there is a bird: His song stops you and makes you blush / concept: Olaf Nicolai (First published.). Koenig Books Ltd.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nicolai, Olaf. In the Woods There Is a Bird: His Song Stops You and Makes You Blush / Concept: Olaf Nicolai. First published. London: Koenig Books Ltd, 2017.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Nicolai, Olaf. In the Woods There Is a Bird: His Song Stops You and Makes You Blush / Concept: Olaf Nicolai. First published. Koenig Books Ltd, 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.