APA-referens

Yuqing Hu, X. L. (2012). Effects of Social Activities on Cognitive Functions: Evidence from CHARLS. THE NATIONAL ACADEMIES PRESS.

Chicago-stil citat

Yuqing Hu, Xiaoyan Lei. Effects of Social Activities on Cognitive Functions: Evidence from CHARLS. Washington: THE NATIONAL ACADEMIES PRESS, 2012.

MLA-referens

Yuqing Hu, Xiaoyan Lei. Effects of Social Activities on Cognitive Functions: Evidence from CHARLS. THE NATIONAL ACADEMIES PRESS, 2012.