Cita APA (7th ed.)

Pietsch, L. (2005). Variable grammars: Verbal agreement in northern dialects of English. Max Niemeyer Verlag.

Cita Chicago (17th ed.)

Pietsch, Lukas. Variable Grammars: Verbal Agreement in Northern Dialects of English. Tübingen: Max Niemeyer Verlag, 2005.

Cita MLA (9th ed.)

Pietsch, Lukas. Variable Grammars: Verbal Agreement in Northern Dialects of English. Max Niemeyer Verlag, 2005.