Lua APA (7ú heag.)
Kooyman, G. L., & Lynch, W. (2013). Penguins: The animal answer guide. The Johns Hopkins University Press.
Lua i Stíl Chicago (17ú heag.)
Kooyman, Gerald L., agus Wayne Lynch. Penguins: The Animal Answer Guide. Baltimore: The Johns Hopkins University Press, 2013.
Lua MLA (9ú heag.)
Kooyman, Gerald L., agus Wayne Lynch. Penguins: The Animal Answer Guide. The Johns Hopkins University Press, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.