Dyfyniad APA

STRAHLER, A. N., & STRAHLER, A. H. (1978). Modern physical geography. John Wiley and Sons.

Dyfyniad Arddull Chicago

STRAHLER, Arthur N., and Alan H. STRAHLER. Modern Physical Geography. New York: John Wiley and Sons, 1978.

Dyfyniad MLA

STRAHLER, Arthur N., and Alan H. STRAHLER. Modern Physical Geography. John Wiley and Sons, 1978.

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