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———. 2018. Spanish Grammar Drills. 3rd Edition. OH: McGraw-Hill Education.
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———. 2014. Spanish Grammar In Context. 3rd Edition. New York: Routledge.
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Muoz-Basols, Javier, Marianne David, and Olga Nez Pieiro. 2010. Speed Up Your Spanish: Strategies to Avoid Common Errors. London: Routledge. https://ebookcentral.proquest.com/lib/rhul/detail.action?docID=455484.
Neruda, Pablo. 1955. ‘Canto General’. 1955. http://www.cervantesvirtual.com/obra/canto-general--0/.
‘Noticias, Última Hora En Informativos Telecinco’. n.d. http://www.telecinco.es/informativos/.
Pountain, Christopher J., Teresa de Carlos, and Angela Howkins. 2011. Practising Spanish Grammar. 3rd Edition. London: Hodder Education.
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Sánchez Cerezo, Sergio. 2000. Nuevo Diccionario Esencial De La Lengua Española. 2nd Edition. Madrid: Santillana.
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Seco, Manuel, Olimpia Andrés, and Gabino Ramos. 1999. Diccionario Del Español Actual. Madrid: Aguilar.
Six, Abigail Lee. 2001a. Upgrade Your Spanish. London: Arnold.
———. 2001b. Upgrade Your Spanish. London: Arnold. https://ebookcentral-proquest-com.ezproxy01.rhul.ac.uk/lib/rhul/detail.action?docID=581413.
‘Sounds of Speech / Spanish’. n.d. http://soundsofspeech.uiowa.edu/.
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