Donald, D. G. M. (1965). A study of the history, practice and economics of forest nurseries in South Africa. [University of Stellenbosch].
Lua i Stíl Chicago (17ú heag.)Donald, D. G. M. A Study of the History, Practice and Economics of Forest Nurseries in South Africa. Stellenbosch: [University of Stellenbosch], 1965.
Lua MLA (8ú heag.)Donald, D. G. M. A Study of the History, Practice and Economics of Forest Nurseries in South Africa. [University of Stellenbosch], 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.