APA (7th ed.) Citation

Harrison, C., Fortin, M., Akker, M. v. d., Mair, F., Calderon-Larranaga, A., Boland, F., . . . Smith, S. Comorbidity versus multimorbidity: Why it matters. SAGE Publishing.

Chicago Style (17th ed.) Citation

Harrison, Christopher, Martin Fortin, Marjan van den Akker, Frances Mair, Amaia Calderon-Larranaga, Fiona Boland, Emma Wallace, Bhautesh Jani, and Susan Smith. Comorbidity Versus Multimorbidity: Why It Matters. SAGE Publishing.

MLA (9th ed.) Citation

Harrison, Christopher, et al. Comorbidity Versus Multimorbidity: Why It Matters. SAGE Publishing.