Dyfyniad APA

Longley, P. A., & Brooks, S. M. (1998). Geocomputation: A primer. John Wiley.

Dyfyniad Arddull Chicago

Longley, Paul A., and Sue Mcdonnel Brooks. Geocomputation: A Primer. Chichester: John Wiley, 1998.

Dyfyniad MLA

Longley, Paul A., and Sue Mcdonnel Brooks. Geocomputation: A Primer. John Wiley, 1998.

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