Lua APA (7ú heag.)

Spurr, S. H. (1963). Growth of Douglas fir in New Zealand. New Zealand Forest Service.

Lua i Stíl Chicago (17ú heag.)

Spurr, Stephen Hopkins. Growth of Douglas Fir in New Zealand. Wellington: New Zealand Forest Service, 1963.

Lua MLA (8ú heag.)

Spurr, Stephen Hopkins. Growth of Douglas Fir in New Zealand. New Zealand Forest Service, 1963.

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