Παραπομπή APA

(1978). A list of publications issued by UNEP or with its support: (draft version) May 1978. [s.l.]: United Nations Environment Programme.

Παραπομπή Chicago Style

A List of Publications Issued By UNEP or With Its Support: (draft Version) May 1978. [s.l.]: United Nations Environment Programme, 1978.

Παραπομπή MLA

A List of Publications Issued By UNEP or With Its Support: (draft Version) May 1978. [s.l.]: United Nations Environment Programme, 1978.

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