Köhlmyr, P. (2003). "To err is human...": An investigation of grammatical errors in Swedish 16-year-old learners' written production in English. Göteborg University Departament of English.
Cytowanie według stylu Chicago (wyd. 17)Köhlmyr, Pia. "To Err Is Human...": An Investigation of Grammatical Errors in Swedish 16-year-old Learners' Written Production in English. Göteborg: Göteborg University Departament of English, 2003.
Cytowanie według stylu MLA (wyd. 9)Köhlmyr, Pia. "To Err Is Human...": An Investigation of Grammatical Errors in Swedish 16-year-old Learners' Written Production in English. Göteborg University Departament of English, 2003.
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