Airborne research platform :
the De Havilland DHC-6 Twin Otter.
APA Citation
Environmental Research Laboratories (U.S.). (1996). Airborne research platform: the De Havilland DHC-6 Twin Otter. [Silver Spring, Md.?]: Office of Oceanic and Atmospheric Research, Environmental Research Laboratories.
MLA Citation
Environmental Research Laboratories (U.S.). Airborne Research Platform: the De Havilland DHC-6 Twin Otter. [Silver Spring, Md.?]: Office of Oceanic and Atmospheric Research, Environmental Research Laboratories, 1996.
Warning: These citations may not always be complete (especially for serials).