APA-ийн эшлэл(7 дахь хэвлэлт)

Roberts, R., & Kreuz, R. J. (2015). Becoming fluent: How cognitive science can help adults learn a foreign language. The MIT Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Roberts, Richard, ба Roger J. Kreuz. Becoming Fluent: How Cognitive Science Can Help Adults Learn a Foreign Language. Cambridge, Massachusetts ; London, England: The MIT Press, 2015.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Roberts, Richard, ба Roger J. Kreuz. Becoming Fluent: How Cognitive Science Can Help Adults Learn a Foreign Language. The MIT Press, 2015.