Cita APA (7a ed.)

Michele Guerrini Autor & Izabella Hearn Autor Secundario Lois May. (2011). Comet 1 Pupil´s Book. University of Dayton Publishing.

Cita Chicago Style (17a ed.)

Michele Guerrini Autor y Izabella Hearn Autor Secundario Lois May. Comet 1 Pupil´s Book. s l: University of Dayton Publishing, 2011.

Cita MLA (9a ed.)

Michele Guerrini Autor y Izabella Hearn Autor Secundario Lois May. Comet 1 Pupil´s Book. University of Dayton Publishing, 2011.