Boehm, R. G. (1995). Glencoe world geography: A physical and cultural approach. New Yok: Mc-Graw Hill.
Dyfyniad Arddull ChicagoBoehm, Richard G. Glencoe World Geography: A Physical and Cultural Approach. New Yok: Mc-Graw Hill, 1995.
Dyfyniad MLABoehm, Richard G. Glencoe World Geography: A Physical and Cultural Approach. New Yok: Mc-Graw Hill, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.