Cita APA (7a ed.)

Barrett, J., & Richardson, F. (2010). Impact!: Civic, social and political education for junior certificate (5th ed.). Gill & Macmillan.

Cita Chicago Style (17a ed.)

Barrett, Jeanne, y Fiona Richardson. Impact!: Civic, Social and Political Education for Junior Certificate. 5th ed. Dublin: Gill & Macmillan, 2010.

Cita MLA (9a ed.)

Barrett, Jeanne, y Fiona Richardson. Impact!: Civic, Social and Political Education for Junior Certificate. 5th ed. Gill & Macmillan, 2010.