Farris, P. L. (1983). Future frontiers in agricultural marketing research. Iowa State University Press.
Lua i Stíl Chicago (17ú heag.)Farris, Paul L. Future Frontiers in Agricultural Marketing Research. Ames: Iowa State University Press, 1983.
Lua MLA (9ú heag.)Farris, Paul L. Future Frontiers in Agricultural Marketing Research. Iowa State University Press, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.