Dyfyniad APA

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.

Dyfyniad Arddull Chicago

Saskatchewan Research Council, Canada. Centre for Mineral and Energy Technology, and J. H. Dyck. Quality and Occurrence of Coal in Southern Saskatchewan, Canada. Saskatoon: Saskatchewan Research Council, 1980.

Dyfyniad MLA

Saskatchewan Research Council, et al. Quality and Occurrence of Coal in Southern Saskatchewan, Canada. Saskatchewan Research Council, 1980.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.