Lucas, :. D., & Kane, P. (1985). Asking demographic questions: David Lucas; with Penny Kane. Development Studies Centre.
Lua i Stíl Chicago (17ú heag.)Lucas, : David, agus Penny Kane. Asking Demographic Questions: David Lucas; with Penny Kane. Canberra: Development Studies Centre, 1985.
Lua MLA (9ú heag.)Lucas, : David, agus Penny Kane. Asking Demographic Questions: David Lucas; with Penny Kane. Development Studies Centre, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.