Παραπομπή σε μορφή APA (7η εκδ.)

Worldwatch Institute & Brown, L. R. (1988). State of the world 2001: A Worldwatch Institute report on progress toward a sustainable society. Earthscan.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Worldwatch Institute και Lester Russell Brown. State of the World 2001: A Worldwatch Institute Report on Progress Toward a Sustainable Society. London: Earthscan, 1988.

Παραπομπή σε μορφή MLA (9th εκδ.)

Worldwatch Institute και Lester Russell Brown. State of the World 2001: A Worldwatch Institute Report on Progress Toward a Sustainable Society. Earthscan, 1988.