Παραπομπή APA

Kruger, P. (2006). Alternative energy resources: The quest for sustainable energy. John Wiley.

Παραπομπή Chicago Style

Kruger, Paul. Alternative Energy Resources: The Quest for Sustainable Energy. Hoboken, N.J.: John Wiley, 2006.

Παραπομπή MLA

Kruger, Paul. Alternative Energy Resources: The Quest for Sustainable Energy. John Wiley, 2006.