Zehetmayr, J. (1960). Afforestation of upland heaths. Her Majesty's Stationery Office.
Lua i Stíl Chicago (17ú heag.)Zehetmayr, J.W.L. Afforestation of Upland Heaths. Edinburgh: Her Majesty's Stationery Office, 1960.
Lua MLA (9ú heag.)Zehetmayr, J.W.L. Afforestation of Upland Heaths. Her Majesty's Stationery Office, 1960.
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