Παραπομπή APA

Snijders, T. A. B., & Bosker, R. J. (2012). Multilevel analysis: An introduction to basic and advanced multilevel modeling (2nd ed.). Sage.

Παραπομπή Chicago Style

Snijders, Tom A B., και Roel J. Bosker. Multilevel Analysis: An Introduction to Basic and Advanced Multilevel Modeling. 2nd ed. Los Angels: Sage, 2012.

Παραπομπή MLA

Snijders, Tom A B., και Roel J. Bosker. Multilevel Analysis: An Introduction to Basic and Advanced Multilevel Modeling. 2nd ed. Sage, 2012.