Gaya APA

UNEP survey of information systems related to environmentally sound technologies : contribution to the 1997 session of the commision on sustainable development. (1997). : Paris, United Nations Environment Programme Industry and Environment.

Gaya MLA

UNEP survey of information systems related to environmentally sound technologies : contribution to the 1997 session of the commision on sustainable development. . : Paris, United Nations Environment Programme Industry and Environment, 1997. Text.