United States. Bureau of Mines & Kilau, H. W. (1981). Evaluation of Synthetic fluorspar in BOF slags. United States. Dept. of the interior, Bureau of Mines.
Citazione stile Chigago Style (17a edizione)United States. Bureau of Mines e H. W. Kilau. Evaluation of Synthetic Fluorspar in BOF Slags. [Washington]: United States. Dept. of the interior, Bureau of Mines, 1981.
Citatione MLA (9a ed.)United States. Bureau of Mines e H. W. Kilau. Evaluation of Synthetic Fluorspar in BOF Slags. United States. Dept. of the interior, Bureau of Mines, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.