Lua APA (7ú heag.)
Seidl, A. (2009). Early spring: An ecologist and her children wake to a warming world. Beacon Press.
Lua i Stíl Chicago (17ú heag.)
Seidl, Amy. Early Spring: An Ecologist and Her Children Wake to a Warming World. Boston: Beacon Press, 2009.
Lua MLA (9ú heag.)
Seidl, Amy. Early Spring: An Ecologist and Her Children Wake to a Warming World. Beacon Press, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.