APA (7th ed.) Citation

Agricola, R., Waarsing, J., Arden, N., Glyn-Jones, S., & al., E. (2013). Cam impingement of the hip: A risk factor for hip osteoarthritis. Nature Research.

Chicago Style (17th ed.) Citation

Agricola, R., J. Waarsing, N. Arden, S. Glyn-Jones, and E. al. Cam Impingement of the Hip: A Risk Factor for Hip Osteoarthritis. Nature Research, 2013.

MLA (9th ed.) Citation

Agricola, R., et al. Cam Impingement of the Hip: A Risk Factor for Hip Osteoarthritis. Nature Research, 2013.