APA (7th ed.) Citation

(2013). Risk mearures and bid-ask spreads of options over standard and poor index.

Chicago Style (17th ed.) Citation

Risk Mearures and Bid-ask Spreads of Options over Standard and Poor Index. 2013.

MLA (8th ed.) Citation

Risk Mearures and Bid-ask Spreads of Options over Standard and Poor Index. 2013.

Warning: These citations may not always be 100% accurate.