Gumz, W. 1. (1950). Gas producers and blast furnaces; theory and methods of calculation. Wiley.
Citazione stile Chigago Style (17a edizione)Gumz, Wilhelm 1901. Gas Producers and Blast Furnaces; Theory and Methods of Calculation. New York: Wiley, 1950.
Citatione MLA (9a ed.)Gumz, Wilhelm 1901. Gas Producers and Blast Furnaces; Theory and Methods of Calculation. Wiley, 1950.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.