APA Citation

Ahrens, F., & Walter, H. R. (1971). Datenbanksysteme. Berlin ; New York: |Walter de Gruyter.

Chicago Style Citation

Ahrens, Friedhelm,, and Helmut R. Walter. Datenbanksysteme. Berlin ; New York: |Walter de Gruyter, 1971.

MLA Citation

Ahrens, Friedhelm,, and Helmut R. Walter. Datenbanksysteme. Berlin ; New York: |Walter de Gruyter, 1971.

Warning: These citations may not always be 100% accurate.