Ekerholm, H. Cultural meanings of wood gas automobile fuel in Schweden, 130-1945: Helena Ekerholm. Past and present energy societies : how energy connects politics, technologies and cultures.(2012).
Παραπομπή σε μορφή Chicago (17η εκδ.)Ekerholm, Helena. "Cultural Meanings of Wood Gas Automobile Fuel in Schweden, 130-1945: Helena Ekerholm." Past and Present Energy Societies : How Energy Connects Politics, Technologies and Cultures.(2012) .
Παραπομπή σε μορφή MLA (8th εκδ.)Ekerholm, Helena. "Cultural Meanings of Wood Gas Automobile Fuel in Schweden, 130-1945: Helena Ekerholm." Past and Present Energy Societies : How Energy Connects Politics, Technologies and Cultures.(2012), .
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