American Congress on Surveying and Mapping & American Society of Photogrammetry. (1978). Proceedings of the American Congress on Surveying and Mapping Fall Convention. The Congress.
Dyfyniad Arddull ChicagoAmerican Congress on Surveying and Mapping and American Society of Photogrammetry. Proceedings of the American Congress on Surveying and Mapping Fall Convention. Washington D.C.: The Congress, 1978.
Dyfyniad MLAAmerican Congress on Surveying and Mapping and American Society of Photogrammetry. Proceedings of the American Congress on Surveying and Mapping Fall Convention. The Congress, 1978.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.