Niles Eldredge, G. E., & Kelley, i. T. (1992). <A >fábrica dos fósseis. Gradiva.
Lua i Stíl Chicago (17ú heag.)Niles Eldredge, Gregiry Eldredge, agus il. True Kelley. <A >fábrica Dos Fósseis. Gradiva, 1992.
Lua MLA (8ú heag.)Niles Eldredge, Gregiry Eldredge, agus il. True Kelley. <A >fábrica Dos Fósseis. Gradiva, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.