Crow, J. E. (1977). Planning for agricultural development: A case study of Zinder, Niger. s.n..
Lua i Stíl Chicago (17ú heag.)Crow, John E. Planning for Agricultural Development: A Case Study of Zinder, Niger. [s.l.: s.n., 1977.
Lua MLA (8ú heag.)Crow, John E. Planning for Agricultural Development: A Case Study of Zinder, Niger. s.n., 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.