APA (7th ed.) Citation

UNEP. (1979). UNEP studies. Pergamon Press.

Chicago Style (17th ed.) Citation

UNEP. UNEP Studies. Oxford [u.a.]: Pergamon Press, 1979.

MLA (9th ed.) Citation

UNEP. UNEP Studies. Pergamon Press, 1979.

Warning: These citations may not always be 100% accurate.