APA (7th ed.) Citation

PD, A., GT, A., LC, B., & DR, S. (1983). Positioning your practice to best advantage. Pennsylvania medicine, 86(1), 28.

Chicago Style (17th ed.) Citation

PD, Alexander, Anders GT, Beck LC, and Sweeney DR. "Positioning Your Practice to Best Advantage." Pennsylvania Medicine 86, no. 1 (1983): 28.

MLA (9th ed.) Citation

PD, Alexander, et al. "Positioning Your Practice to Best Advantage." Pennsylvania Medicine, vol. 86, no. 1, 1983, p. 28.