Não informado. (1959). Canadian agricultural engineering. Canadian Society of Agricultural Engineering.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Canadian Agricultural Engineering. Ottawa: Canadian Society of Agricultural Engineering, 1959.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Canadian Agricultural Engineering. Canadian Society of Agricultural Engineering, 1959.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.