APA-referens (7:e uppl.)

Liu Zhongpei, Ping Jianhua, Han Yuping, & Universidad Nacional de Colombia. Departamento de Geociencias. Chemical characteristics of groundwater and its spatial distribution in urban area of Zhumadian city.

Chicago-referens (17:e uppl.)

Liu Zhongpei, Ping Jianhua, Han Yuping, och Universidad Nacional de Colombia. Departamento de Geociencias. Chemical Characteristics of Groundwater and Its Spatial Distribution in Urban Area of Zhumadian City.

MLA-referens (9:e uppl.)

Liu Zhongpei, et al. Chemical Characteristics of Groundwater and Its Spatial Distribution in Urban Area of Zhumadian City.

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