Padilla, M. J. (2005). Close Earth's waters. Pearson Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Padilla, Michael J. Close Earth's Waters. Needham, Mass.: Pearson Prentice Hall, 2005.
Lua MLA (8ú heag.)Padilla, Michael J. Close Earth's Waters. Pearson Prentice Hall, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.