Dyfyniad APA

Clendinning, J., & Olliver, J. G. (1979). Principles and use of Surveying Instruments (3rd ed.). ELBS and Van Nostrand.

Dyfyniad Arddull Chicago

Clendinning, J., and J. G. Olliver. Principles and Use of Surveying Instruments. 3rd ed. London: ELBS and Van Nostrand, 1979.

Dyfyniad MLA

Clendinning, J., and J. G. Olliver. Principles and Use of Surveying Instruments. 3rd ed. ELBS and Van Nostrand, 1979.

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