Beatty, J. Speaking of species: Darwin's strategy / John Beatty. The Darwinian heritage : [incl. proceed. of the Charles Darwin Centenary Conference, Florence Center for the History and Philosophy of Science, June 1982].(1985).
Lua i Stíl Chicago (17ú heag.)Beatty, John. "Speaking of Species: Darwin's Strategy / John Beatty." The Darwinian Heritage : [incl. Proceed. of the Charles Darwin Centenary Conference, Florence Center for the History and Philosophy of Science, June 1982].(1985) .
Lua MLA (8ú heag.)Beatty, John. "Speaking of Species: Darwin's Strategy / John Beatty." The Darwinian Heritage : [incl. Proceed. of the Charles Darwin Centenary Conference, Florence Center for the History and Philosophy of Science, June 1982].(1985), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.