Ontario. Dept. of Economics and Development Regional development ; selected background & Gertler, L. O. (1965). Regional development ; selected background papers for the Province of Ontario's International Conference on Regional Development and Economic Change, Feb. 15, 16, 17, Toronto, 1964. s.n.
Lua i Stíl Chicago (17ú heag.)Ontario. Dept. of Economics and Development Regional development ; selected background agus Leonard O. Gertler. Regional Development ; Selected Background Papers for the Province of Ontario's International Conference on Regional Development and Economic Change, Feb. 15, 16, 17, Toronto, 1964. [Toronto: s.n, 1965.
Lua MLA (9ú heag.)Ontario. Dept. of Economics and Development Regional development ; selected background agus Leonard O. Gertler. Regional Development ; Selected Background Papers for the Province of Ontario's International Conference on Regional Development and Economic Change, Feb. 15, 16, 17, Toronto, 1964. s.n, 1965.