APA (7th ed.) Citation

Klas, W., Neuhold, E. J., & Schrefl, M. (1988). Visual databases need datamodels for multimedia data.

Chicago Style (17th ed.) Citation

Klas, Wolfgang, Erich J. Neuhold, and Michael Schrefl. Visual Databases Need Datamodels for Multimedia Data. Sankt Augustin, 1988.

MLA (9th ed.) Citation

Klas, Wolfgang, et al. Visual Databases Need Datamodels for Multimedia Data. 1988.