Παραπομπή σε μορφή APA (7η εκδ.)

Langdon, P. (2017). Within Walking Distance: Creating Livable Communities for All. Island Press/Center for Resource Economics : Imprint: Island Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Langdon, Philip. Within Walking Distance: Creating Livable Communities for All. Washington, DC: Island Press/Center for Resource Economics : Imprint: Island Press, 2017.

Παραπομπή σε μορφή MLA (8th εκδ.)

Langdon, Philip. Within Walking Distance: Creating Livable Communities for All. Island Press/Center for Resource Economics : Imprint: Island Press, 2017.