American Psychological Association 6th edition

Christaller, T. (ed.). [ca. 1991]. Proceedings / GWAI 91 [Book]. Presented at the GWAI15, Bonn.

ISO-690 (author-date, English)

CHRISTALLER, Thomas (ed.). [book]. 1991. Berlin: Springer. Informatik-Fachberichte, 285 : Subreihe künstliche Intelligenz. ISBN 3540545581.

Modern Language Association 9th edition

Christaller, T., editor. “Proceedings / GWAI 91”. Informatik-Fachberichte, book, Springer, 1991.

Mohr Siebeck - Recht (Deutsch - Österreich)

Emerald - Harvard

Christaller, T. (Ed.). (1991), “Proceedings / GWAI 91”, Informatik-Fachberichte, presented at the GWAI15, Springer, Berlin.

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