International Conference on Energy Alternatives / Risk Education (1989 : Lake Balaton, Hungary), & Marx, G. (1989). Energy education. National Centre for Educational Technology.
Cita Chicago (17th ed.)International Conference on Energy Alternatives / Risk Education (1989 : Lake Balaton, Hungary), i George Marx. Energy Education. Hungary: National Centre for Educational Technology, 1989.
Cita MLA (9th ed.)International Conference on Energy Alternatives / Risk Education (1989 : Lake Balaton, Hungary), i George Marx. Energy Education. National Centre for Educational Technology, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.