Cita APA (7a ed.)

Lightfoot, D. (1979). Principles of diachronic syntax. University Press.

Cita Chicago Style (17a ed.)

Lightfoot, David. Principles of Diachronic Syntax. Cambridge [etc.]: University Press, 1979.

Cita MLA (9a ed.)

Lightfoot, David. Principles of Diachronic Syntax. University Press, 1979.