Citazione Stile APA (7a Edizione)

International Geographical Union. (1972). La géographie a traveurs un siècle de Congrès internationaux =: Geography through a century of international congresses. International Geographical Union.

Citazione stile Chigago Style (17a edizione)

International Geographical Union. La Géographie a Traveurs Un Siècle De Congrès Internationaux =: Geography Through a Century of International Congresses. [S.l.]: International Geographical Union, 1972.

Citatione MLA (9a ed.)

International Geographical Union. La Géographie a Traveurs Un Siècle De Congrès Internationaux =: Geography Through a Century of International Congresses. International Geographical Union, 1972.