APA (7th ed.) Citation

Hulstijn, J. H. (2015). Language Proficiency in Native and Non-native Speakers: Theory and Research.

Chicago Style (17th ed.) Citation

Hulstijn, Jan H. Language Proficiency in Native and Non-native Speakers: Theory and Research. 2015.

MLA (9th ed.) Citation

Hulstijn, Jan H. Language Proficiency in Native and Non-native Speakers: Theory and Research. 2015.

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