Gosler, A., Gosler, A., & Perrins, C. (1987). Some aspects of bill morphology in relation to ecology in the great tit Parus major.
Lua i Stíl Chicago (17ú heag.)Gosler, A., Andrew Gosler, agus C. Perrins. Some Aspects of Bill Morphology in Relation to Ecology in the Great Tit Parus Major. 1987.
Lua MLA (9ú heag.)Gosler, A., et al. Some Aspects of Bill Morphology in Relation to Ecology in the Great Tit Parus Major. 1987.
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