Cita APA (7a ed.)
Garton-Sprenger, J., & Greenall, S. (1989). On course for first certificate. Heinemann International a division of Heinemann Educational Books Ltd.
Cita Chicago Style (17a ed.)
Garton-Sprenger, Judy, y Simon Greenall. On Course for First Certificate. Oxford: Heinemann International a division of Heinemann Educational Books Ltd, 1989.
Cita MLA (9a ed.)
Garton-Sprenger, Judy, y Simon Greenall. On Course for First Certificate. Heinemann International a division of Heinemann Educational Books Ltd, 1989.
Precaución: Estas citas no son 100% exactas.