Stephenson, W. A. (1968). Seaweed in agriculture and horticulture. Faber.
Lua i Stíl Chicago (17ú heag.)Stephenson, William Anthony. Seaweed in Agriculture and Horticulture. London: Faber, 1968.
Lua MLA (9ú heag.)Stephenson, William Anthony. Seaweed in Agriculture and Horticulture. Faber, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.