Cita APA (7a ed.)
ebrary, Inc, & Walker, J. A. (2010). Aspect in grammatical variation. John Benjamins Pub. Company.
Cita Chicago Style (17a ed.)
ebrary, Inc, y James A. Walker. Aspect in Grammatical Variation. Amsterdam ; Philadelphia: John Benjamins Pub. Company, 2010.
Cita MLA (9a ed.)
ebrary, Inc, y James A. Walker. Aspect in Grammatical Variation. John Benjamins Pub. Company, 2010.
Precaución: Estas citas no son 100% exactas.