APA引用形式

Berger, A., Edelsberg, J., Teal, S., Mychaskiw, M. A., & Oster, G. (2012). Changes in healthcare utilization and costs associated with sildenafil therapy for pulmonary arterial hypertension: A retrospective cohort study. BioMed Central.

シカゴスタイル引用形

Berger, Ariel, John Edelsberg, Simon Teal, Marko A. Mychaskiw, , Gerry Oster. Changes in Healthcare Utilization and Costs Associated With Sildenafil Therapy for Pulmonary Arterial Hypertension: A Retrospective Cohort Study. BioMed Central, 2012.

MLA引用形式

Berger, Ariel, et al. Changes in Healthcare Utilization and Costs Associated With Sildenafil Therapy for Pulmonary Arterial Hypertension: A Retrospective Cohort Study. BioMed Central, 2012.