Cita APA (7th ed.)
ebrary, Inc, & Walker, J. A. (2010). Aspect in grammatical variation. John Benjamins Pub. Company.
Cita Chicago (17th ed.)
ebrary, Inc, i James A. Walker. Aspect in Grammatical Variation. Amsterdam ; Philadelphia: John Benjamins Pub. Company, 2010.
Cita MLA (9th ed.)
ebrary, Inc, i James A. Walker. Aspect in Grammatical Variation. John Benjamins Pub. Company, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.