Ellinger, D. (2017). Hybrid unmanned aircraft system. https://oaks.kent.edu/node/5470
Ellinger, Derek. 2017. “Hybrid Unmanned Aircraft System”. https://oaks.kent.edu/node/5470.
Ellinger, D. Hybrid Unmanned Aircraft System. 21 Mar. 2017, https://oaks.kent.edu/node/5470.