Não informado. (1923). Canadian insect pest review. Department of Agriculture, Division of Entomology.
Chicago-viite (17. p.)Não informado. Canadian Insect Pest Review. Ottawa: Department of Agriculture, Division of Entomology, 1923.
MLA-viite (8. p.)Não informado. Canadian Insect Pest Review. Department of Agriculture, Division of Entomology, 1923.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.