Yan, J., Xiong, Y., Yi, C., Sun, X., He, Q., Fu, W., . . . Liu, Q. (2012). Pandemic (H1N1) 2009 Virus Circulating in Pigs, Guangxi, China. Centers for Disease Control and Prevention.
استشهاد بنمط شيكاغوYan, Jian-Hua, et al. Pandemic (H1N1) 2009 Virus Circulating in Pigs, Guangxi, China. Centers for Disease Control and Prevention, 2012.
MLA استشهادYan, Jian-Hua, et al. Pandemic (H1N1) 2009 Virus Circulating in Pigs, Guangxi, China. Centers for Disease Control and Prevention, 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.