Van Loon, H. W. (1932). Van loon's geography : the story of the: World (De luxe ed.). Garden City.
Citazione stile Chigago Style (17a edizione)Van Loon, Hendrik Willem. Van Loon's Geography : the Story of the: World. De luxe ed. New York: Garden City, 1932.
Citatione MLA (9a ed.)Van Loon, Hendrik Willem. Van Loon's Geography : the Story of the: World. De luxe ed. Garden City, 1932.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.