Minot, E., & Perrins, C. (1980). Interspecific competition between Blue and Great tits.
Lua i Stíl Chicago (17ú heag.)Minot, E., agus C. Perrins. Interspecific Competition Between Blue and Great Tits. 1980.
Lua MLA (9ú heag.)Minot, E., agus C. Perrins. Interspecific Competition Between Blue and Great Tits. 1980.
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