APA

Beijing Municipal Environmental Protection Bureau, . (1994). Environmental management institutions y organizations in Beijing. Washington, D. C: Metropolitan Environmental Improvement Program.

Chicago

Beijing Municipal Environmental Protection Bureau, . 1994. Environmental management institutions y organizations in Beijing. Washington, D. C: Metropolitan Environmental Improvement Program.

Harvard

Beijing Municipal Environmental Protection Bureau, . (1994). Environmental management institutions y organizations in Beijing. Washington, D. C: Metropolitan Environmental Improvement Program.

MLA

Beijing Municipal Environmental Protection Bureau, . Environmental management institutions y organizations in Beijing. Washington, D. C: Metropolitan Environmental Improvement Program. 1994.