APA (7th ed.) Citation

Peterson-Berger, W., Gedda, N., & Eyron, J. (1980). Du ler. Bluebell of Sweden.

Chicago Style (17th ed.) Citation

Peterson-Berger, Wilhelm, Nicolai Gedda, and Jan Eyron. Du Ler. [S.l.]: Bluebell of Sweden, 1980.

MLA (9th ed.) Citation

Peterson-Berger, Wilhelm, et al. Du Ler. Bluebell of Sweden, 1980.