APA-referens (7:e uppl.)

Conroy, E., Rosala-Hallas, A., Blazeby, J., Burnside, G., Cook, J., & Gamble, C. (2018). Randomized trials involving surgery did not routinely report considerations of learning and clustering effects. Elsevier.

Chicago-referens (17:e uppl.)

Conroy, E., A. Rosala-Hallas, J. Blazeby, G. Burnside, J. Cook, och C. Gamble. Randomized Trials Involving Surgery Did Not Routinely Report Considerations of Learning and Clustering Effects. Elsevier, 2018.

MLA-referens (9:e uppl.)

Conroy, E., et al. Randomized Trials Involving Surgery Did Not Routinely Report Considerations of Learning and Clustering Effects. Elsevier, 2018.