APA (7th ed.) Citation

Lehmann-Ortega, L., & Roy, P. (2009). Introduction.

Chicago Style (17th ed.) Citation

Lehmann-Ortega, Laurence, and Pierre Roy. Introduction. 2009.

MLA (8th ed.) Citation

Lehmann-Ortega, Laurence, and Pierre Roy. Introduction. 2009.

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