Cita APA (7th ed.)

IEA Solar Heating and Cooling Programme & Duff, W. S. (1983). Eight evacuated collector installations: A report from the International Energy Agency Solar Heating and Cooling Programme. American Solar Energy Society.

Cita Chicago (17th ed.)

IEA Solar Heating and Cooling Programme i William S. Duff. Eight Evacuated Collector Installations: A Report from the International Energy Agency Solar Heating and Cooling Programme. Boulder, N.Y.: American Solar Energy Society, 1983.

Cita MLA (8th ed.)

IEA Solar Heating and Cooling Programme i William S. Duff. Eight Evacuated Collector Installations: A Report from the International Energy Agency Solar Heating and Cooling Programme. American Solar Energy Society, 1983.