Citazione Stile APA (7a Edizione)
Ahlmann, H. W. (1953). Glacier variations and climatic fluctuations. American geographical society.
Citazione stile Chigago Style (17a edizione)
Ahlmann, Hans Wilhelm. Glacier Variations and Climatic Fluctuations. New York: American geographical society, 1953.
Citatione MLA (9a ed.)
Ahlmann, Hans Wilhelm. Glacier Variations and Climatic Fluctuations. American geographical society, 1953.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.