APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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