Παραπομπή σε μορφή APA (7η εκδ.)

Hyltenstam, K., & Obler, L. (1989). Bilingualism across the lifespan: Aspects of acquisition, maturity, and loss. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hyltenstam, Kenneth, και Loraine Obler. Bilingualism Across the Lifespan: Aspects of Acquisition, Maturity, and Loss. Cambridge: Cambridge University Press, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Hyltenstam, Kenneth, και Loraine Obler. Bilingualism Across the Lifespan: Aspects of Acquisition, Maturity, and Loss. Cambridge University Press, 1989.