APA (7th ed.) Citation

Ferreira-Valente, M. A., Ribeiro, J. L. P., & Jensen, M. P. (2016). Validity of four pain intensity rating scales.

Chicago Style (17th ed.) Citation

Ferreira-Valente, M. Alexandra, José Luís Pais Ribeiro, and Mark P. Jensen. Validity of Four Pain Intensity Rating Scales. 2016.

MLA (8th ed.) Citation

Ferreira-Valente, M. Alexandra, et al. Validity of Four Pain Intensity Rating Scales. 2016.