OECD iLibrary, Organisation for Economic Co-operation and Development, International Energy Agency, & Van der Hoeven, M. (2013). Coal: Medium-term market report 2013 : market trends and projects to 2018. OECD.
Παραπομπή σε μορφή Chicago (17η εκδ.)OECD iLibrary, Organisation for Economic Co-operation and Development, International Energy Agency, και Maria Van der Hoeven. Coal: Medium-term Market Report 2013 : Market Trends and Projects to 2018. Paris: OECD, 2013.
Παραπομπή σε μορφή MLA (9th εκδ.)OECD iLibrary, et al. Coal: Medium-term Market Report 2013 : Market Trends and Projects to 2018. OECD, 2013.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.