Dyfyniad APA

ROBINSON, A., SALE, R., & MORRISON, J. (1978). Elements of cartography.-- ed.4. John Wiley and Sons.

Dyfyniad Arddull Chicago

ROBINSON, Arthur, Randall SALE, and Joel MORRISON. Elements of Cartography.-- Ed.4. New York: John Wiley and Sons, 1978.

Dyfyniad MLA

ROBINSON, Arthur, et al. Elements of Cartography.-- Ed.4. John Wiley and Sons, 1978.

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