APA-referens (7:e uppl.)

Portner, L. G. (2020). Foundations of clinical research: Applications to practic (4th.). F.A.Davis.

Chicago-referens (17:e uppl.)

Portner, Leslie Gross. Foundations of Clinical Research: Applications to Practic. 4th. Philadelphia: F.A.Davis, 2020.

MLA-referens (9:e uppl.)

Portner, Leslie Gross. Foundations of Clinical Research: Applications to Practic. 4th. F.A.Davis, 2020.