APA (7th ed.) Citation

DL, R., & PW, S. (1999). Interpreting validity indexes for diagnostic tests: An illustration using the Berg Balance Test. Physical Therapy, 79(10), 939. https://doi.org/10.1093/ptj/79.10.939

Chicago Style (17th ed.) Citation

DL, Riddle, and Stratford PW. "Interpreting Validity Indexes for Diagnostic Tests: An Illustration Using the Berg Balance Test." Physical Therapy 79, no. 10 (1999): 939. https://doi.org/10.1093/ptj/79.10.939.

MLA (9th ed.) Citation

DL, Riddle, and Stratford PW. "Interpreting Validity Indexes for Diagnostic Tests: An Illustration Using the Berg Balance Test." Physical Therapy, vol. 79, no. 10, 1999, p. 939, https://doi.org/10.1093/ptj/79.10.939.