APA (7th ed.) Citation

Katzenbach, J., Martín, C., Paredes, L., & Solà, R. La sombra.

Chicago Style (17th ed.) Citation

Katzenbach, John, Cristina Martín, Laura Paredes, and Raquel Solà. La Sombra. Barcelona.

MLA (9th ed.) Citation

Katzenbach, John, et al. La Sombra.

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