Cita APA (7th ed.)

Bogaard, J. (2000). New Happy Days 2. Interactive english (1a. ed.). Richmond Publishing.

Cita Chicago (17th ed.)

Bogaard, Jeannine. New Happy Days 2. Interactive English. 1a. ed. Buenos Aires: Richmond Publishing, 2000.

Cita MLA (9th ed.)

Bogaard, Jeannine. New Happy Days 2. Interactive English. 1a. ed. Richmond Publishing, 2000.