Cita APA

Sheahan, R. T. (1981). Alternative energy sources: A strategy planning guide. Aspen Systems Corp.

Citación estilo Chicago

Sheahan, Richard T. Alternative Energy Sources: A Strategy Planning Guide. Rockville, Maryland: Aspen Systems Corp, 1981.

Cita MLA

Sheahan, Richard T. Alternative Energy Sources: A Strategy Planning Guide. Aspen Systems Corp, 1981.

Warning: These citations may not always be 100% accurate.