Portney, L. G., & Watkins, M. P. (2000). Foundations of clinical research: Applications to practice (2nd ed.). Prentice Hall.
Citace podle Chicago (17th ed.)Portney, Leslie Gross, a Mary P. Watkins. Foundations of Clinical Research: Applications to Practice. 2nd ed. Upper Saddle River, NJ: Prentice Hall, 2000.
Citace podle MLA (9th ed.)Portney, Leslie Gross, a Mary P. Watkins. Foundations of Clinical Research: Applications to Practice. 2nd ed. Prentice Hall, 2000.
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