APA (7th ed.) Citation

Hüllen, W. (1980). Understanding bilingualism. Peter D. Lang.

Chicago Style (17th ed.) Citation

Hüllen, Werner. Understanding Bilingualism. Frankfurt am Main [etc.]: Peter D. Lang, 1980.

MLA (9th ed.) Citation

Hüllen, Werner. Understanding Bilingualism. Peter D. Lang, 1980.

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