APA (7th ed.) Citation

Lüdi, G., & Py, B. (1986). Être bilingue. Peter Lang.

Chicago Style (17th ed.) Citation

Lüdi, Georges, and Bernard Py. Être Bilingue. Berne [etc.]: Peter Lang, 1986.

MLA (9th ed.) Citation

Lüdi, Georges, and Bernard Py. Être Bilingue. Peter Lang, 1986.

Warning: These citations may not always be 100% accurate.