Παραπομπή APA

Tinbergen, J. (1967). Development planning. Weiden feld and Nicolson limited.

Παραπομπή Chicago Style

Tinbergen, Jan. Development Planning. London: Weiden feld and Nicolson limited, 1967.

Παραπομπή MLA

Tinbergen, Jan. Development Planning. Weiden feld and Nicolson limited, 1967.