Lua APA (7ú heag.)
ebrary, Inc, & Andrews, R. N. L. (1991). Opportunities in applied environmental research and development. National Academy Press.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Richard N. L. Andrews. Opportunities in Applied Environmental Research and Development. Washington, D.C.: National Academy Press, 1991.
Lua MLA (9ú heag.)
ebrary, Inc, agus Richard N. L. Andrews. Opportunities in Applied Environmental Research and Development. National Academy Press, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.