Cita APA (7th ed.)

Dufour, C., Hege, A., Kahmann, M., & Dirringer, J. (2016). Introduction.

Cita Chicago (17th ed.)

Dufour, Christian, Adelheid Hege, Marcus Kahmann, i Josépha Dirringer. Introduction. 2016.

Cita MLA (8th ed.)

Dufour, Christian, et al. Introduction. 2016.