Lua APA (7ú heag.)

Berenstain, J., & Berenstain, M. (2009). The Berenstain Bears' class trip. HarperCollins.

Lua i Stíl Chicago (17ú heag.)

Berenstain, Jan, agus Mike Berenstain. The Berenstain Bears' Class Trip. New York, NY: HarperCollins, 2009.

Lua MLA (8ú heag.)

Berenstain, Jan, agus Mike Berenstain. The Berenstain Bears' Class Trip. HarperCollins, 2009.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.