Shi, L. (1997). Health services research methods. Delmar Pub.
Cita Chicago (17th ed.)Shi, Leiyu. Health Services Research Methods. Albany, NY: Delmar Pub, 1997.
Cita MLA (9th ed.)Shi, Leiyu. Health Services Research Methods. Delmar Pub, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.