Gaya APA

Heath, W.. (1978). Terrestrial photogrammetric surveys of unstable terrain in Columbia . : TRRL.

Gaya Chicago

Heath, W.. Terrestrial photogrammetric surveys of unstable terrain in Columbia. : TRRL, 1978. Chart.

Gaya MLA

Heath, W.. Terrestrial photogrammetric surveys of unstable terrain in Columbia. : TRRL, 1978. Chart.

Gaya Turabian

Heath, W.. Terrestrial photogrammetric surveys of unstable terrain in Columbia. : TRRL, 1978. Chart.