Approaches to grammaticalization

MLA

Closs Traugott, Elizabeth, and Bernd Heine. Approaches to Grammaticalization. Amsterdam [etc.]: John Benjamins, 1991.

APA

Closs Traugott, E., & Heine, B. (1991). Approaches to grammaticalization. Amsterdam [etc.]: John Benjamins.

Chicago

Closs Traugott, Elizabeth, ed., and Bernd Heine ed. Approaches to Grammaticalization. Amsterdam [etc.]: John Benjamins, 1991.