Cita APA (7a ed.)
Dellar, H., & Walkley, A. (2007). Innovations coursebook: A course in natural english. Thomson.
Cita Chicago Style (17a ed.)
Dellar, Hugh, y Andrew Walkley. Innovations Coursebook: A Course in Natural English. London: Thomson, 2007.
Cita MLA (9a ed.)
Dellar, Hugh, y Andrew Walkley. Innovations Coursebook: A Course in Natural English. Thomson, 2007.
Precaución: Estas citas no son 100% exactas.