Lua APA (7ú heag.)

(1953). Farm forestry extension: What it is and how it works / W.K. Williams.

Lua i Stíl Chicago (17ú heag.)

Farm Forestry Extension: What It Is and How It Works / W.K. Williams. 1953.

Lua MLA (9ú heag.)

Farm Forestry Extension: What It Is and How It Works / W.K. Williams. 1953.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.