Cita APA (7th ed.)
Energy Subcommitee of the Midwest Plan Service. Low Temperature and Solar Grain Drying Handbook. Midwest Plan Service.
Cita Chicago (17th ed.)
Energy Subcommitee of the Midwest Plan Service. Low Temperature and Solar Grain Drying Handbook. Iowa, EUA: Midwest Plan Service.
Cita MLA (9th ed.)
Energy Subcommitee of the Midwest Plan Service. Low Temperature and Solar Grain Drying Handbook. Midwest Plan Service.
Atenció: Aquestes cites poden no estar 100% correctes.