Παραπομπή APA

(1973). Proceedings of the American Congress on Surveying and Mapping, 33rd Annual Meeting, Washington, D.C., March 11-16, 1973. Washington, D.C: American Congress on Surveying and Mapping.

Παραπομπή Chicago Style

Proceedings of the American Congress On Surveying and Mapping, 33rd Annual Meeting, Washington, D.C., March 11-16, 1973. Washington, D.C: American Congress on Surveying and Mapping, 1973.

Παραπομπή MLA

Proceedings of the American Congress On Surveying and Mapping, 33rd Annual Meeting, Washington, D.C., March 11-16, 1973. Washington, D.C: American Congress on Surveying and Mapping, 1973.

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