Nelson, P. V. (1978). Greenhouse operation and management. Reston Pub. Co.
Lua i Stíl Chicago (17ú heag.)Nelson, Paul V. Greenhouse Operation and Management. Reston, Va: Reston Pub. Co, 1978.
Lua MLA (9ú heag.)Nelson, Paul V. Greenhouse Operation and Management. Reston Pub. Co, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.