APA
Hoffman J. M., Shah N. D., Vermeulen L. C., Doloresco F., Grim P., Hunkler R. J., Hontz K. M. & Schumock G. T. (20080131). Projecting future drug expenditures--2008. : American journal of health-system pharmacy : AJHP : official journal of the American Society of Health-System Pharmacists.
Chicago
Hoffman James M, Shah Nilay D, Vermeulen Lee C, Doloresco Fred, Grim Penny, Hunkler Robert J, Hontz Karrie M and Schumock Glen T. 20080131. Projecting future drug expenditures--2008. : American journal of health-system pharmacy : AJHP : official journal of the American Society of Health-System Pharmacists.
Harvard
Hoffman J. M., Shah N. D., Vermeulen L. C., Doloresco F., Grim P., Hunkler R. J., Hontz K. M. and Schumock G. T. (20080131). Projecting future drug expenditures--2008. : American journal of health-system pharmacy : AJHP : official journal of the American Society of Health-System Pharmacists.
MLA
Hoffman James M, Shah Nilay D, Vermeulen Lee C, Doloresco Fred, Grim Penny, Hunkler Robert J, Hontz Karrie M and Schumock Glen T. Projecting future drug expenditures--2008. : American journal of health-system pharmacy : AJHP : official journal of the American Society of Health-System Pharmacists. 20080131.