Cita APA (7th ed.)
Gelemur, P., & Gómez, B. (2010). Trails: Course book. Richmond ; Santillana.
Cita Chicago (17th ed.)
Gelemur, Paula, i Blanca Gómez. Trails: Course Book. Madrid: Richmond ; Santillana, 2010.
Cita MLA (9th ed.)
Gelemur, Paula, i Blanca Gómez. Trails: Course Book. Richmond ; Santillana, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.