Παραπομπή APA

Cross, B. (1997). The world directory of renewable energy suppliers and services 1953. London: James and James Ltd..

Παραπομπή Chicago Style

Cross, Bruce. The World Directory of Renewable Energy Suppliers and Services 1953. London: James and James Ltd., 1997.

Παραπομπή MLA

Cross, Bruce. The World Directory of Renewable Energy Suppliers and Services 1953. London: James and James Ltd., 1997.

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