Não informado. (1954). Papua New Guinea Agricultural Journal. Department of Agriculture.
Chicago-referens (17:e uppl.)Não informado. Papua New Guinea Agricultural Journal. Port Moresby: Department of Agriculture, 1954.
MLA-referens (8:e uppl.)Não informado. Papua New Guinea Agricultural Journal. Department of Agriculture, 1954.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.