Não informado. (2020). Pests and Their Control. National Pest Control Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Pests and Their Control. Cleveland, Ohio: National Pest Control Association, 2020.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Pests and Their Control. National Pest Control Association, 2020.
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