APA Style

Lawson, R, B, M, D, (., Lawson, R, B, M, D. (). The Earth Summit: The United Nations Conference on Environment and Development (UNCED) . London: .

MLA Style

Lawson, Rick;, Blois,, Matthijs, De, (ed)., Lawson, Rick;, Blois,, Matthijs, De. "The Earth Summit: The United Nations Conference on Environment and Development (UNCED)". London: , . Text.