MacKenzie, R. D. The ecological approach to the study of the human community: Roderick D. MacKenzie. The City : [Suggestions for investigation of human behavior in the urban environment].(1997).
Lua i Stíl Chicago (17ú heag.)MacKenzie, Roderick D. "The Ecological Approach to the Study of the Human Community: Roderick D. MacKenzie." The City : [Suggestions for Investigation of Human Behavior in the Urban Environment].(1997) .
Lua MLA (8ú heag.)MacKenzie, Roderick D. "The Ecological Approach to the Study of the Human Community: Roderick D. MacKenzie." The City : [Suggestions for Investigation of Human Behavior in the Urban Environment].(1997), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.