APA引文

Zipkin, D. A. (2008). Medicare Beneficiaries and Free Prescription Drug Samples: A National Survey. Springer-Verlag.

Citação norma Chicago

Zipkin, Daniella A. Medicare Beneficiaries and Free Prescription Drug Samples: A National Survey. Springer-Verlag, 2008.

MLA引文

Zipkin, Daniella A. Medicare Beneficiaries and Free Prescription Drug Samples: A National Survey. Springer-Verlag, 2008.

警告：這些引文格式不一定是100％准確.