References
- Musa, G., and K. Dimmock. 2012. “Scuba Diving Tourism: Introduction to the Special Issue.” Tourism in Marine Environments 8 (1–2): 1–5. doi: 10.3727/154427312X13262430523947
- PADI. 2014. Worldwide Corporate Statistics 2014 (Data for 2008–2013). Accessed November 24, 2014. http://www.padi.com/scuba-diving/about-padi/statistics