Bryson, R. A., & Kolenkow, R. J. (1974). Physical geography today: A portrait of a planet. CRM Books.
Citazione stile Chigago Style (17a edizione)Bryson, Reid A., e Robert J. Kolenkow. Physical Geography Today: A Portrait of a Planet. Del Mar, Calif.: CRM Books, 1974.
Citatione MLA (8a ed.)Bryson, Reid A., e Robert J. Kolenkow. Physical Geography Today: A Portrait of a Planet. CRM Books, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.