Cita APA (7a ed.)

Agudo Medina, M., Ruiz Thierry, A., & Galinsoga Uceda, M. J. (2004). Hello and now what? Stanley.

Cita Chicago Style (17a ed.)

Agudo Medina, María, Astrid Ruiz Thierry, y María José Galinsoga Uceda. Hello and Now What? [Irún]: Stanley, 2004.

Cita MLA (9a ed.)

Agudo Medina, María, et al. Hello and Now What? Stanley, 2004.