Παραπομπή APA

Brown, A., & Burrows, E. (1977). Regional economic problems. George Allen &Unwin.

Παραπομπή Chicago Style

Brown, A.J, και E.M Burrows. Regional Economic Problems. London: George Allen &Unwin, 1977.

Παραπομπή MLA

Brown, A.J, και E.M Burrows. Regional Economic Problems. George Allen &Unwin, 1977.