Woods, R. (1982). Theoretical population geography. Longman.
Lua i Stíl Chicago (17ú heag.)Woods, Robert. Theoretical Population Geography. London: Longman, 1982.
Lua MLA (9ú heag.)Woods, Robert. Theoretical Population Geography. Longman, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.