Gaya APA

SCHOR, H, J, ;, G, D, H. (2007). Landforming : An Environmental Approach to Hillside Development, Mine Reclamation and Watershed Restoration . : John Wiley & Sons, Inc..

Gaya MLA

SCHOR, Horst, J,, ;, GRAY,, Donald, H.. "Landforming : An Environmental Approach to Hillside Development, Mine Reclamation and Watershed Restoration". : John Wiley & Sons, Inc., 2007. Buku.