Alberta. Coal Mining Industry Commission, Historical Society of Alberta, & Bercuson, D. J. (1978). Alberta's coal industry, 1919. Alberta Records Publication Board : Historical Society of Alberta.
Citazione stile Chigago Style (17a edizione)Alberta. Coal Mining Industry Commission, Historical Society of Alberta, e David Jay Bercuson. Alberta's Coal Industry, 1919. Calgary: Alberta Records Publication Board : Historical Society of Alberta, 1978.
Citatione MLA (8a ed.)Alberta. Coal Mining Industry Commission, et al. Alberta's Coal Industry, 1919. Alberta Records Publication Board : Historical Society of Alberta, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.