APA (7th ed.) Citation

Kümmel, P. (1979). Formalization of natural languages. Springer-Verlag.

Chicago Style (17th ed.) Citation

Kümmel, Peter. Formalization of Natural Languages. Berlin ; New York: Springer-Verlag, 1979.

MLA (9th ed.) Citation

Kümmel, Peter. Formalization of Natural Languages. Springer-Verlag, 1979.