Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (8ú heag.)

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

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