India. Ministry of Environment and Forests. (1980). Annual report 1989. Convention on International Trade in Endangered Species of Wild Fauna and Flora.
芝加哥风格引文India. Ministry of Environment and Forests. Annual Report 1989. New Delhi: Convention on International Trade in Endangered Species of Wild Fauna and Flora, 1980.
MLA引文India. Ministry of Environment and Forests. Annual Report 1989. Convention on International Trade in Endangered Species of Wild Fauna and Flora, 1980.
警告：这些引文格式不一定是100％准确.