Não informado. (1960). Canadian plant disease survey. Plant Research Institute, Department of Agriculture.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Canadian Plant Disease Survey. Ottawa: Plant Research Institute, Department of Agriculture, 1960.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Canadian Plant Disease Survey. Plant Research Institute, Department of Agriculture, 1960.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.