APA Citation

Nelen, J. M., & Siegel, D. Organized crime in the 21st century: Motivations, opportunities, and constraints.

Chicago Style Citation

Nelen, J. M., and Dina Siegel. Organized Crime in the 21st Century: Motivations, Opportunities, and Constraints.

MLA Citation

Nelen, J. M., and Dina Siegel. Organized Crime in the 21st Century: Motivations, Opportunities, and Constraints.

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