Schmalstieg, William R. „A Note on the *-ā stem Nominative, Dative, Accusative and Instrumental Singular Cases in Balto-Slavic“. Baltistica 43, no. 2 (lapkričio 30, 2008): 157–162. žiūrėta balandžio 30, 2026. https://www.journals.vu.lt/baltistica/article/view/39600.