APA (7th ed.) Citation

Helten, E., & Boos, A. (1989). Beiträge zur Credibility-Theorie. VVW.

Chicago Style (17th ed.) Citation

Helten, Elmar, and Andrea Boos. Beiträge Zur Credibility-Theorie. Karlsruhe: VVW, 1989.

MLA (9th ed.) Citation

Helten, Elmar, and Andrea Boos. Beiträge Zur Credibility-Theorie. VVW, 1989.

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