Citação norma APA

Xu, H., Zhang, W., Gu, L., Qu, Z., Sa, Z., Zhang, X., & Tian, D. (2014). Aging village doctors in five counties in rural China: Situation and implications. BioMed Central.

Citação norma Chicago

Xu, Huiwen, Weijun Zhang, Linni Gu, Zhiyong Qu, Zhihong Sa, Xiulan Zhang, and Donghua Tian. Aging Village Doctors in Five Counties in Rural China: Situation and Implications. BioMed Central, 2014.

Citação norma MLA

Xu, Huiwen, et al. Aging Village Doctors in Five Counties in Rural China: Situation and Implications. BioMed Central, 2014.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.