Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (1971). IDS Communication. University of Sussex, Institute of Development Studies.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. IDS Communication. Brighton, Inglaterra: University of Sussex, Institute of Development Studies, 1971.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. IDS Communication. University of Sussex, Institute of Development Studies, 1971.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.