Não informado. (1960). Canadian plant disease survey. Plant Research Institute, Department of Agriculture.
Cita Chicago Style (17a ed.)Não informado. Canadian Plant Disease Survey. Ottawa: Plant Research Institute, Department of Agriculture, 1960.
Cita MLA (8a ed.)Não informado. Canadian Plant Disease Survey. Plant Research Institute, Department of Agriculture, 1960.
Precaución: Estas citas no son 100% exactas.