International Conference on Coal, the Environment and Development : Sydney, & International Energy Agency. (1992). International Conference on Coal, the Environment and Development: Technologies to Reduce Greenhouse Gas Emissions: Proceedings, Sydney, Australia, 18th-21st November 1991. International Energy Agency, Organisation for Economic Co-operation and Development.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Conference on Coal, the Environment and Development : Sydney, και International Energy Agency. International Conference on Coal, the Environment and Development: Technologies to Reduce Greenhouse Gas Emissions: Proceedings, Sydney, Australia, 18th-21st November 1991. Paris: International Energy Agency, Organisation for Economic Co-operation and Development, 1992.
Παραπομπή σε μορφή MLA (9th εκδ.)International Conference on Coal, the Environment and Development : Sydney, και International Energy Agency. International Conference on Coal, the Environment and Development: Technologies to Reduce Greenhouse Gas Emissions: Proceedings, Sydney, Australia, 18th-21st November 1991. International Energy Agency, Organisation for Economic Co-operation and Development, 1992.