Källander, H. (1983). Aspects of the breeding biology, migratory movements, winter survival, and population fluctuations in the Great Tit, Parus major, and the Blue Tit, P. caeruleus. Lunds universitet.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Källander, Hans. Aspects of the Breeding Biology, Migratory Movements, Winter Survival, and Population Fluctuations in the Great Tit, Parus Major, and the Blue Tit, P. Caeruleus. Sweden: Lunds universitet, 1983.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Källander, Hans. Aspects of the Breeding Biology, Migratory Movements, Winter Survival, and Population Fluctuations in the Great Tit, Parus Major, and the Blue Tit, P. Caeruleus. Lunds universitet, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.