Citazione Stile APA (7a Edizione)
Knowles, R. S. (1980). <The> Greatest gamblers: <the> epic of American oil exploration (2. ed., 2.print.). University of Oklahoma Press.
Citazione stile Chigago Style (17a edizione)
Knowles, Ruth Sheldon. <The> Greatest Gamblers: <the> Epic of American Oil Exploration. 2. ed., 2.print. Norman: University of Oklahoma Press, 1980.
Citatione MLA (9a ed.)
Knowles, Ruth Sheldon. <The> Greatest Gamblers: <the> Epic of American Oil Exploration. 2. ed., 2.print. University of Oklahoma Press, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.