Kavanagh, B. F., & Bird, S. J. G. (1996). Surveying: : principles and applications (4th ed.). Upper Saddle River, NJ.: Prentice Hall.
Παραπομπή Chicago StyleKavanagh, Barry F., and S. J. Glenn Bird. Surveying: : Principles and Applications. 4th ed. Upper Saddle River, NJ.: Prentice Hall, 1996.
Παραπομπή MLAKavanagh, Barry F., and S. J. Glenn Bird. Surveying: : Principles and Applications. 4th ed. Upper Saddle River, NJ.: Prentice Hall, 1996.
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