Παραπομπή APA

(1971). Centre for Environmental Studies: Fourth annual report April 1970 to March 1971. London: Centre for Environmental Studies.

Παραπομπή Chicago Style

Centre for Environmental Studies: Fourth Annual Report April 1970 to March 1971. London: Centre for Environmental Studies, 1971.

Παραπομπή MLA

Centre for Environmental Studies: Fourth Annual Report April 1970 to March 1971. London: Centre for Environmental Studies, 1971.

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