Petschek, P. (2014). Grading: LandscapingSMART, 3D machine control systems, stormwater management (2nd edition, revised and expanded.). Birkhäuser.
Cita Chicago (17th ed.)Petschek, Peter. Grading: LandscapingSMART, 3D Machine Control Systems, Stormwater Management. 2nd edition, revised and expanded. Basel: Birkhäuser, 2014.
Cita MLA (9th ed.)Petschek, Peter. Grading: LandscapingSMART, 3D Machine Control Systems, Stormwater Management. 2nd edition, revised and expanded. Birkhäuser, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.