Forster, D. L. (1981). Foundations for managing the farm business. Grid.
Lua i Stíl Chicago (17ú heag.)Forster, D. Lynn. Foundations for Managing the Farm Business. Grid, 1981.
Lua MLA (9ú heag.)Forster, D. Lynn. Foundations for Managing the Farm Business. Grid, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.