Bristol Symposium on Remote Sensing, Barrett, E. C., & Curtis, L. F. (1974). Environmental remote sensing: applications and achievements: Papers presented at the Bristol Symposium on Remote Sensing, Department of Geography, University of Bristol, 2 October, 1972. E. Arnold; Crane, Russak.
Chicago-viite (17. p.)Bristol Symposium on Remote Sensing, E. C. Barrett, ja Leonard F. Curtis. Environmental Remote Sensing: Applications and Achievements: Papers Presented at the Bristol Symposium on Remote Sensing, Department of Geography, University of Bristol, 2 October, 1972. London, New York: E. Arnold; Crane, Russak, 1974.
MLA-viite (8. p.)Bristol Symposium on Remote Sensing, et al. Environmental Remote Sensing: Applications and Achievements: Papers Presented at the Bristol Symposium on Remote Sensing, Department of Geography, University of Bristol, 2 October, 1972. E. Arnold; Crane, Russak, 1974.