APA (7th ed.) Citation

Gabriel, D. K. (1994). Using image processing to measure tree crown diameters and estimate percent crown closure. [publisher not identified].

Chicago Style (17th ed.) Citation

Gabriel, Darren Kyle. Using Image Processing to Measure Tree Crown Diameters and Estimate Percent Crown Closure. [Place of publication not identified]: [publisher not identified], 1994.

MLA (9th ed.) Citation

Gabriel, Darren Kyle. Using Image Processing to Measure Tree Crown Diameters and Estimate Percent Crown Closure. [publisher not identified], 1994.