Cita APA (7a ed.)
Viney, P., & Viney, K. Grapevine. Teachers Book 2. The University Press.
Cita Chicago Style (17a ed.)
Viney, Peter, y Karen Viney. Grapevine. Teachers Book 2. Oxford: The University Press.
Cita MLA (9a ed.)
Viney, Peter, y Karen Viney. Grapevine. Teachers Book 2. The University Press.
Precaución: Estas citas no son 100% exactas.