APA引文

Weltens, H. H. (1989). The attrition of French as a foreign language. Foris Publications.

Chicago Style (17th ed.) Citation

Weltens, Hubertus H. The Attrition of French as a Foreign Language. Dordrecht [The Netherlands]: Foris Publications, 1989.

MLA引文

Weltens, Hubertus H. The Attrition of French as a Foreign Language. Foris Publications, 1989.