Não informado. (1953). Papua and New Guinea Agricultural Gazette. Department of Agriculture.
Chicago-referens (17:e uppl.)Não informado. Papua and New Guinea Agricultural Gazette. Port Moresby: Department of Agriculture, 1953.
MLA-referens (8:e uppl.)Não informado. Papua and New Guinea Agricultural Gazette. Department of Agriculture, 1953.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.