E. ÖZKUL. The Encyclopedia of Sustainable Tourism. UK: CAB, 2015
ÖZKUL, E. 2015. The Encyclopedia of Sustainable Tourism , pp..
ÖZKUL, E., (2015). The Encyclopedia of Sustainable Tourism.
ÖZKUL, EMRAH. The Encyclopedia of Sustainable Tourism, UK: CAB, 2015
ÖZKUL, EMRAH. "The Encyclopedia of Sustainable Tourism." UK: CAB, 2015.
ÖZKUL, E. 2015. "The Encyclopedia of Sustainable Tourism." , UK: CAB, pp..
@encyclopedia{encyclopedia, author={EMRAH ÖZKUL}, title={The Encyclopedia of Sustainable Tourism}, publisher={UK: CAB}, pages={} }