Traugott, Elizabeth Closs. 1989. On the Rise of Epistemic Meaning in English: an Example of Subjectification in Semantic Change. Language 65. 31-55.
@article{Traugott-1989,
author = {Traugott, Elizabeth Closs},
journal = {Language},
pages = {31-55},
title = {On the Rise of Epistemic Meaning in English: an Example of Subjectification in Semantic Change},
volume = {65},
year = {1989}
}