Gaya APA
      al.], A, C, [. (2015).
    Study on Levelling Works Made for Drawing Tridimensional Models of Surface and Calculus of the Volume of Earthwork (6 ( 2015 )).
    :
  Elsevier.
  
Gaya MLA
      al.], Aurel, CALINA, [et.
    "Study on Levelling Works Made for Drawing Tridimensional Models of Surface and Calculus of the Volume of Earthwork".
    6 ( 2015 )
    :
  Elsevier,
  2015.
  e-journal.