Saskatchewan Research Council, Canada. Centre for Mineral and Energy Technology, & Dyck, J. H. (1980). Quality and occurrence of coal in southern Saskatchewan, Canada. Saskatchewan Research Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSaskatchewan Research Council, Canada. Centre for Mineral and Energy Technology, और J. H. Dyck. Quality and Occurrence of Coal in Southern Saskatchewan, Canada. Saskatoon: Saskatchewan Research Council, 1980.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSaskatchewan Research Council, et al. Quality and Occurrence of Coal in Southern Saskatchewan, Canada. Saskatchewan Research Council, 1980.
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