Hulstijn, J. H. (1982). Monitor use by adult second language learners. Universiteit van Amsterdam.
Lua i Stíl Chicago (17ú heag.)Hulstijn, Jan Hendrik. Monitor Use by Adult Second Language Learners. [Amsterdam]: Universiteit van Amsterdam, 1982.
Lua MLA (8ú heag.)Hulstijn, Jan Hendrik. Monitor Use by Adult Second Language Learners. Universiteit van Amsterdam, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.