Ramsey, R. M. (1968). English through patterns. Teide.
Cita Chicago Style (17a ed.)Ramsey, Robert M. English Through Patterns. Barcelona: Teide, 1968.
Cita MLA (9a ed.)Ramsey, Robert M. English Through Patterns. Teide, 1968.
Precaución: Estas citas no son 100% exactas.
