Horry, R., Wright, D. B., & Skagerberg, E. M. (2009). Functions for traditional and multilevel approaches to signal detection theory. Behavior Research Methods, 41(2), pp. 257-267. doi:10.3758/BRM.41.2.257

Horry, Ruth, Daniel B. Wright, and Elin M. Skagerberg. "Functions for Traditional and Multilevel Approaches to Signal Detection Theory." Behavior Research Methods 41, no. 2 (2009): 257-267.

Horry, Ruth, Daniel B. Wright, and Elin M. Skagerberg. "Functions for Traditional and Multilevel Approaches to Signal Detection Theory." Behavior Research Methods 41.2 (2009): 257-267.