APA (7e ed.) Bronvermelding

India. Dept. of Coal & India. Dept. of Coal. Annual report - Department of Coal. Govt. of India, Ministry of Energy, Dept. of Coal.

Chicago (17e ed.) Bronvermelding

India. Dept. of Coal en India. Dept. of Coal. Annual Report - Department of Coal. New Delhi: Govt. of India, Ministry of Energy, Dept. of Coal.

MLA (8e ed.) Bronvermelding

India. Dept. of Coal en India. Dept. of Coal. Annual Report - Department of Coal. Govt. of India, Ministry of Energy, Dept. of Coal.