Παραπομπή APA

(1978). Directory of national bodies concerned with urban and regional research. [s.l.]: United Nations.

Παραπομπή Chicago Style

Directory of National Bodies Concerned With Urban and Regional Research. [s.l.]: United Nations, 1978.

Παραπομπή MLA

Directory of National Bodies Concerned With Urban and Regional Research. [s.l.]: United Nations, 1978.

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