McCormac, J. C. (1985). Surveying (2nd ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)McCormac, Jack C. Surveying. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1985.
Lua MLA (9ú heag.)McCormac, Jack C. Surveying. 2nd ed. Prentice-Hall, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.