Gaya APA

Hyltenstam, K., Obler, L, K. (1989). Bilingualism across the lifespan : aspects of acquisition, maturyty and loss . New Yor: Effendiharahap Publishing Coy.

Gaya MLA

Hyltenstam, Kenneth., Obler, Loraine, K. "Bilingualism across the lifespan : aspects of acquisition, maturyty and loss". New Yor: Effendiharahap Publishing Coy, 1989. Text.