Cita APA

(1991). Ecology chronicle: Twenty-four windows on the man and the biophere programme 1989-1990. Belgica: UNESCO.

Citación estilo Chicago

Ecology Chronicle: Twenty-four Windows On the Man and the Biophere Programme 1989-1990. Belgica: UNESCO, 1991.

Cita MLA

Ecology Chronicle: Twenty-four Windows On the Man and the Biophere Programme 1989-1990. Belgica: UNESCO, 1991.

Precaución: Estas citas no son 100% exactas.