Mac Donald, A. L. (1976). Agricultural technology in developing countries: Social factors related to the use of modern techniques in two rural areas in Peru. University Press.
Lua i Stíl Chicago (17ú heag.)Mac Donald, Alphonse L. Agricultural Technology in Developing Countries: Social Factors Related to the Use of Modern Techniques in Two Rural Areas in Peru. Rotterdam: University Press, 1976.
Lua MLA (8ú heag.)Mac Donald, Alphonse L. Agricultural Technology in Developing Countries: Social Factors Related to the Use of Modern Techniques in Two Rural Areas in Peru. University Press, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.