Tingle, A. C. (1966). Silviculture, volume and yield of Populus deltoides. [University of Stellenbosch].
Lua i Stíl Chicago (17ú heag.)Tingle, A. C. Silviculture, Volume and Yield of Populus Deltoides. Stellenbosch: [University of Stellenbosch], 1966.
Lua MLA (8ú heag.)Tingle, A. C. Silviculture, Volume and Yield of Populus Deltoides. [University of Stellenbosch], 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.