Lua APA (7ú heag.)

Parry, J., & Butterworth, B. (1981). Grassland management. Northwood Books.

Lua i Stíl Chicago (17ú heag.)

Parry, John, agus Bill Butterworth. Grassland Management. London: Northwood Books, 1981.

Lua MLA (9ú heag.)

Parry, John, agus Bill Butterworth. Grassland Management. Northwood Books, 1981.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.