Gaya APA
Kennie, G, P, A, T, J, M. (1990).
Terrain Modelling in Surveying and Civil Engineering .
London:
Whittles Publishing.
Gaya MLA
Kennie, G, Petrie, And, T, J, M.
"Terrain Modelling in Surveying and Civil Engineering".
London:
Whittles Publishing,
1990.
Text.