APA

Ferkel R. D., Markolf K., Goodfellow D., Sprague N. A., Friedman M. J., Dorey F., Fox J. M., Del Pizzo W. & Snyder S. J. (19871006). Treatment of the anterior cruciate ligament-absent knee with associated meniscal tears. Instrumented testing and clinical evaluation of two patient groups. : Clinical orthopaedics and related research.

Chicago

Ferkel R D, Markolf K, Goodfellow D, Sprague N A, Friedman M J, Dorey F, Fox J M, Del Pizzo W and Snyder S J. 19871006. Treatment of the anterior cruciate ligament-absent knee with associated meniscal tears. Instrumented testing and clinical evaluation of two patient groups. : Clinical orthopaedics and related research.

Harvard

Ferkel R. D., Markolf K., Goodfellow D., Sprague N. A., Friedman M. J., Dorey F., Fox J. M., Del Pizzo W. and Snyder S. J. (19871006). Treatment of the anterior cruciate ligament-absent knee with associated meniscal tears. Instrumented testing and clinical evaluation of two patient groups. : Clinical orthopaedics and related research.

MLA

Ferkel R D, Markolf K, Goodfellow D, Sprague N A, Friedman M J, Dorey F, Fox J M, Del Pizzo W and Snyder S J. Treatment of the anterior cruciate ligament-absent knee with associated meniscal tears. Instrumented testing and clinical evaluation of two patient groups. : Clinical orthopaedics and related research. 19871006.