Gordon, A. G. (1992). Seed manual for forest trees. Her Majesty's Stationery Office.
Chicago Style (17th ed.) CitationGordon, A. G. Seed Manual for Forest Trees. London: Her Majesty's Stationery Office, 1992.
MLA (9th ed.) CitationGordon, A. G. Seed Manual for Forest Trees. Her Majesty's Stationery Office, 1992.