Cita APA (7a ed.)

Gerritsen, M., & Stein, D. (1992). Internal and external factors in syntactic change. Mouton de Gruyter.

Cita Chicago Style (17a ed.)

Gerritsen, M., y Dieter Stein. Internal and External Factors in Syntactic Change. Berlín [etc.]: Mouton de Gruyter, 1992.

Cita MLA (9a ed.)

Gerritsen, M., y Dieter Stein. Internal and External Factors in Syntactic Change. Mouton de Gruyter, 1992.