APA-referens (7:e uppl.)

Não informado. (1959). Canadian agricultural engineering. Canadian Society of Agricultural Engineering.

Chicago-referens (17:e uppl.)

Não informado. Canadian Agricultural Engineering. Ottawa: Canadian Society of Agricultural Engineering, 1959.

MLA-referens (8:e uppl.)

Não informado. Canadian Agricultural Engineering. Canadian Society of Agricultural Engineering, 1959.

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