APA-ийн эшлэл(7 дахь хэвлэлт)

Caro, D., & Lehmann, R. (2009). Achievement inequalities in Hamburg schools: How do they change as students get older?

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Caro, D., ба R. Lehmann. Achievement Inequalities in Hamburg Schools: How Do They Change as Students Get Older? 2009.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Caro, D., ба R. Lehmann. Achievement Inequalities in Hamburg Schools: How Do They Change as Students Get Older? 2009.