APA aipamena

Tinbergen, J. (1967). Development planning. World Univ. Library.

Chicago Style aipamena

Tinbergen, Jan. Development Planning. World Univ. Library, 1967.

MLA aipamena

Tinbergen, Jan. Development Planning. World Univ. Library, 1967.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.