Warner, W. S. 1., Graham, R. P. D., Read, R. E., Graham, R. W., & Read, R. E. (1996). Small format aerial photography. Caithness, Scotland: Whittles Publishing.

Warner, William S. 1950-, Ron Ph. D. Graham, Roger E. Read, R. W. Graham, and R. E. Read. Small Format Aerial Photography. Caithness, Scotland: Whittles Publishing, 1996.

Warner, William S. 1950-, et al. Small Format Aerial Photography. Caithness, Scotland: Whittles Publishing, 1996.