Lua APA (7ú heag.)
ebrary, Inc, & Brink, P. t. (2002). Voluntary environmental agreements: Process, practice and future use. Greenleaf Pub..
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Patrick ten Brink. Voluntary Environmental Agreements: Process, Practice and Future Use. Sheffield, South Yorkshire, England: Greenleaf Pub., 2002.
Lua MLA (9ú heag.)
ebrary, Inc, agus Patrick ten Brink. Voluntary Environmental Agreements: Process, Practice and Future Use. Greenleaf Pub., 2002.
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