APA引文

Sardinha, G., Hart, J., & Ho, D. (2009). Sing out loud: Children's songs. United States of Americaσ: Department of State.

Παραπομπή Chicago Style

Sardinha, Greg, John Hart, και Daniel Ho. Sing Out Loud: Children's Songs. United States of Americaσ: Department of State, 2009.

MLA引文

Sardinha, Greg, John Hart, και Daniel Ho. Sing Out Loud: Children's Songs. United States of Americaσ: Department of State, 2009.