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.
Chicago-referens (17:e uppl.)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.
MLA-referens (8:e uppl.)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.
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