APA

,, . (1989). Training course for managers of protected areas in Europe and Africa. Strasbourg: Council of Europe.

Chicago

,, . 1989. Training course for managers of protected areas in Europe and Africa. Strasbourg: Council of Europe.

Harvard

,, . (1989). Training course for managers of protected areas in Europe and Africa. Strasbourg: Council of Europe.

MLA

,, . Training course for managers of protected areas in Europe and Africa. Strasbourg: Council of Europe. 1989.