Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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