Cita APA (7a ed.)

Gavela, M. D. F. (2015). The grammar and lexis of conversational informal English in advanced textbooks. Cambridge Scholars Publishing.

Cita Chicago Style (17a ed.)

Gavela, María Dolores Fernández. The Grammar and Lexis of Conversational Informal English in Advanced Textbooks. Newcastle upon Tyne, England: Cambridge Scholars Publishing, 2015.

Cita MLA (9a ed.)

Gavela, María Dolores Fernández. The Grammar and Lexis of Conversational Informal English in Advanced Textbooks. Cambridge Scholars Publishing, 2015.