Mikkonen, A. V. (1985). Spring migration and commencement of breeding in sympatric populations of the Chaffinch, Fringilla coelebs, and the Brambling, F. montifringilla, in Finland. University of Oulu : Oulu University Library, [distr.].
Παραπομπή σε μορφή Chicago (17η εκδ.)Mikkonen, Aarne V. Spring Migration and Commencement of Breeding in Sympatric Populations of the Chaffinch, Fringilla Coelebs, and the Brambling, F. Montifringilla, in Finland. Oulu: University of Oulu : Oulu University Library, [distr.], 1985.
Παραπομπή σε μορφή MLA (8th εκδ.)Mikkonen, Aarne V. Spring Migration and Commencement of Breeding in Sympatric Populations of the Chaffinch, Fringilla Coelebs, and the Brambling, F. Montifringilla, in Finland. University of Oulu : Oulu University Library, [distr.], 1985.