Cita APA (7a ed.)

Vos, R. (1994). Eurotra grammar, Wh-questions: A comparative study of Dutch, English, Portuguese and Spanish. Edizioni dell'Orso.

Cita Chicago Style (17a ed.)

Vos, Riet. Eurotra Grammar, Wh-questions: A Comparative Study of Dutch, English, Portuguese and Spanish. Alessandria: Edizioni dell'Orso, 1994.

Cita MLA (9a ed.)

Vos, Riet. Eurotra Grammar, Wh-questions: A Comparative Study of Dutch, English, Portuguese and Spanish. Edizioni dell'Orso, 1994.