Cita APA (7a ed.)
Soars, J., & Soars, L. HEADWAY. Elementary: Student's book. Oxford University Press.
Cita Chicago Style (17a ed.)
Soars, John, y Liz Soars. HEADWAY. Elementary: Student's Book. Oxford: Oxford University Press.
Cita MLA (9a ed.)
Soars, John, y Liz Soars. HEADWAY. Elementary: Student's Book. Oxford University Press.
Precaución: Estas citas no son 100% exactas.