APA (7th ed.) Citation

Campbell, J., Blasy, H., & Neve, L. (1990). Trixie Belden. Schneider.

Chicago Style (17th ed.) Citation

Campbell, Julie, Heidemarie Blasy, and Liselotte Neve. Trixie Belden. München ; Wien: Schneider, 1990.

MLA (9th ed.) Citation

Campbell, Julie, et al. Trixie Belden. Schneider, 1990.