Dyfyniad APA

Campbell, J. (1991). Introductory cartography (2nd ed.). Wm. C. Brown.

Dyfyniad Arddull Chicago

Campbell, John. Introductory Cartography. 2nd ed. Dubuque, Ia: Wm. C. Brown, 1991.

Dyfyniad MLA

Campbell, John. Introductory Cartography. 2nd ed. Wm. C. Brown, 1991.

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