Tapay, N. E. (1976). The effects of farmer's education on production and income. s. n.
Lua i Stíl Chicago (17ú heag.)Tapay, Nenita Estolano. The Effects of Farmer's Education on Production and Income. s. l: s. n, 1976.
Lua MLA (9ú heag.)Tapay, Nenita Estolano. The Effects of Farmer's Education on Production and Income. s. n, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.