Here are some really quick choices from my own :
Aumann, Robert J. 2008. An Economic Index of Riskiness The Journal of political economy, Vol.116(5), pp.810-836.

Barberis, Nicholas 2012. A Model of Casino Gambling Management Science, Vol. 58(1), pp.35-51.

Shmanske, Stephen 2005, ODDS-SETTING EFFICIENCY IN GAMBLING MARKETS: EVIDENCE FROM THE PGA TOUR Journal of Economics and Finance Vol.29(3), pp.391-402

Sallaz, Jeffrey J, 2002, The House Rules: Autonomy and Interest among Service Workers in the Contemporary Casino Industry Work and occupations Vol.29(4), pp.394-427.

These are may be not very appropriate, you can definitely make your choice that contributes to the better annotated bibliography. But all the sources should under ECONOMICS field and related to my research question.