Cita APA (7a ed.)

Liu, X., Tu, P., Rittscher, J., Perera, A., & Krahnstoever, N. (2005). Detecting and counting people in surveillance applications.

Cita Chicago Style (17a ed.)

Liu, X., P. Tu, J. Rittscher, A. Perera, y N. Krahnstoever. Detecting and Counting People in Surveillance Applications. 2005.

Cita MLA (9a ed.)

Liu, X., et al. Detecting and Counting People in Surveillance Applications. 2005.