Não informado. (1968). Canadian agricultural insect pest review. Department of Agriculture, Information Division.
Chicago-Zitierstil (17. Ausg.)Não informado. Canadian Agricultural Insect Pest Review. Ottawa: Department of Agriculture, Information Division, 1968.
MLA-Zitierstil (8. Ausg.)Não informado. Canadian Agricultural Insect Pest Review. Department of Agriculture, Information Division, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.