Portney, L. G., & Watkins, M. P. (1993). Foundations of clinical research: Applications to practice. Appleton & Lange.
Citação norma ChicagoPortney, Leslie Gross, and Mary P. Watkins. Foundations of Clinical Research: Applications to Practice. Norwalk, Conn: Appleton & Lange, 1993.
Citação norma MLAPortney, Leslie Gross, and Mary P. Watkins. Foundations of Clinical Research: Applications to Practice. Appleton & Lange, 1993.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.