APA (7th ed.) Citation

Ringbom, H. (1987). The role of the first language in foreign language learning. Multilingual Matters Ltd..

Chicago Style (17th ed.) Citation

Ringbom, Håkan. The Role of the First Language in Foreign Language Learning. Clevedon, Avon, England ; Philadelphia: Multilingual Matters Ltd., 1987.

MLA (9th ed.) Citation

Ringbom, Håkan. The Role of the First Language in Foreign Language Learning. Multilingual Matters Ltd., 1987.