APA (7th ed.) Citation

DL, R. (1998). Classification and low back pain: A review of the literature and critical analysis of selected systems. Physical Therapy, 78(7), 708. https://doi.org/10.1093/ptj/78.7.708

Chicago Style (17th ed.) Citation

DL, Riddle. "Classification and Low Back Pain: A Review of the Literature and Critical Analysis of Selected Systems." Physical Therapy 78, no. 7 (1998): 708. https://doi.org/10.1093/ptj/78.7.708.

MLA (9th ed.) Citation

DL, Riddle. "Classification and Low Back Pain: A Review of the Literature and Critical Analysis of Selected Systems." Physical Therapy, vol. 78, no. 7, 1998, p. 708, https://doi.org/10.1093/ptj/78.7.708.