Epstein, Jonathan H.; Olival, Kevin J.; Pulliam, Juliet R.C.; Smith, Craig; Westrum, Justin; Hughes, Tom; Dobson, Andrew P.; Zubaid, Akbar; Rahman, Sohayati Abdul; Basir, Misliah Mohamad; Field, Hume E.; Daszak, Peter (2009). "Pteropus vampyrus, a hunted migratory species with a multinational home-range and a need for regional management". Journal of Applied Ecology. 46 (5): 991–1002. Bibcode:2009JApEc..46..991E. doi:10.1111/j.1365-2664.2009.01699.x.
Epstein, Jonathan H.; Olival, Kevin J.; Pulliam, Juliet R.C.; Smith, Craig; Westrum, Justin; Hughes, Tom; Dobson, Andrew P.; Zubaid, Akbar; Rahman, Sohayati Abdul; Basir, Misliah Mohamad; Field, Hume E.; Daszak, Peter (2009). "Pteropus vampyrus, a hunted migratory species with a multinational home-range and a need for regional management". Journal of Applied Ecology. 46 (5): 991–1002. Bibcode:2009JApEc..46..991E. doi:10.1111/j.1365-2664.2009.01699.x.
Matti Airas. "Echolocation in bats"(PDF). HUT, Laboratory of Acoustics and Audio Signal Processing. p.4. Archived from the original(PDF) on October 19, 2013. Retrieved July 19, 2013.
Matti Airas. "Echolocation in bats"(PDF). HUT, Laboratory of Acoustics and Audio Signal Processing. p.4. Archived from the original(PDF) on October 19, 2013. Retrieved July 19, 2013.