Zehetmayr, J. (1960). Afforestation of upland heaths. Her Majesty's Stationery Office.
Chicago-referens (17:e uppl.)Zehetmayr, J.W.L. Afforestation of Upland Heaths. Edinburgh: Her Majesty's Stationery Office, 1960.
MLA-referens (9:e uppl.)Zehetmayr, J.W.L. Afforestation of Upland Heaths. Her Majesty's Stationery Office, 1960.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.