Dyfyniad APA

MARSH, W. M., & GROSSA, J. (2002). Environmental geography: Science, land use, and earth systems.-- ed.2. John Wiley and Sons.

Dyfyniad Arddull Chicago

MARSH, William M., and John GROSSA. Environmental Geography: Science, Land Use, and Earth Systems.-- Ed.2. New York: John Wiley and Sons, 2002.

Dyfyniad MLA

MARSH, William M., and John GROSSA. Environmental Geography: Science, Land Use, and Earth Systems.-- Ed.2. John Wiley and Sons, 2002.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.