Hedrick, P. W. (1984). Population biology: The evolution and ecology of populations. Jones and Bartlett Publishers.
Lua i Stíl Chicago (17ú heag.)Hedrick, Philip W. Population Biology: The Evolution and Ecology of Populations. Boston: Jones and Bartlett Publishers, 1984.
Lua MLA (8ú heag.)Hedrick, Philip W. Population Biology: The Evolution and Ecology of Populations. Jones and Bartlett Publishers, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.