Não informado. (2020). Pests and Their Control. National Pest Control Association.
Chicago-referens (17:e uppl.)Não informado. Pests and Their Control. Cleveland, Ohio: National Pest Control Association, 2020.
MLA-referens (8:e uppl.)Não informado. Pests and Their Control. National Pest Control Association, 2020.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.