HERUBIN, C. A. (1987). Principles Of Surveying Charles A. Herubin. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)HERUBIN, Charles A. Principles Of Surveying Charles A. Herubin. Prentice-Hall, 1987.
Lua MLA (8ú heag.)HERUBIN, Charles A. Principles Of Surveying Charles A. Herubin. Prentice-Hall, 1987.
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