TINBERGEN, J. (1967). Development Planning Jan Tinbergen. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)TINBERGEN, Jan. Development Planning Jan Tinbergen. McGraw-Hill, 1967.
Lua MLA (8ú heag.)TINBERGEN, Jan. Development Planning Jan Tinbergen. McGraw-Hill, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.