Cita APA (7a ed.)

Lightfoot, D., & Havenhill, J. (2019). Variable properties in language: Their nature and acquisition. Georgetown University Press.

Cita Chicago Style (17a ed.)

Lightfoot, David, y Jonathan Havenhill. Variable Properties in Language: Their Nature and Acquisition. Washington, DC: Georgetown University Press, 2019.

Cita MLA (9a ed.)

Lightfoot, David, y Jonathan Havenhill. Variable Properties in Language: Their Nature and Acquisition. Georgetown University Press, 2019.