Vernon, R. C. (1997). Professional surveyor's manual. McGraw-Hill.
Cita Chicago Style (17a ed.)Vernon, Robert C. Professional Surveyor's Manual. New York: McGraw-Hill, 1997.
Cita MLA (9a ed.)Vernon, Robert C. Professional Surveyor's Manual. McGraw-Hill, 1997.
Precaución: Estas citas no son 100% exactas.