Citazione Stile APA (7a Edizione)

Portney, L. G., & Watkins, M. P. (1993). Foundations of clinical research: Applications to practice. Appleton & Lange.

Citazione stile Chigago Style (17a edizione)

Portney, Leslie Gross, e Mary P. Watkins. Foundations of Clinical Research: Applications to Practice. Norwalk, Conn: Appleton & Lange, 1993.

Citatione MLA (9a ed.)

Portney, Leslie Gross, e Mary P. Watkins. Foundations of Clinical Research: Applications to Practice. Appleton & Lange, 1993.