Cita APA (7a ed.)

Ulaga, W., Michel, S., Hinterhuber, A., Liozu, S., Kohli, A., Sawhney, M., . . . Bharadwaj, S. (2018). Bill It, Kill It, or Keep It Free? (1st edition.). MIT Sloan Management Review.

Cita Chicago Style (17a ed.)

Ulaga, Wolfgang, et al. Bill It, Kill It, or Keep It Free? 1st edition. MIT Sloan Management Review, 2018.

Cita MLA (8a ed.)

Ulaga, Wolfgang, et al. Bill It, Kill It, or Keep It Free? 1st edition. MIT Sloan Management Review, 2018.