APA (7th ed.) Citation

Gaiser, W., & Müller, H. (1989). The importance of peer groups in different regional contexts and biographical stages. The social world of adolescents, 280-296.

Chicago Style (17th ed.) Citation

Gaiser, Wolfgang, and Hans-Ulrich Müller. "The Importance of Peer Groups in Different Regional Contexts and Biographical Stages." The Social World of Adolescents 1989: 280-296.

MLA (8th ed.) Citation

Gaiser, Wolfgang, and Hans-Ulrich Müller. "The Importance of Peer Groups in Different Regional Contexts and Biographical Stages." The Social World of Adolescents, 1989, pp. 280-296.