Endzelīns, J., Schmaltiegs, W. R., & Jēgers, B. (1971). Jānis Endzelīns' comparative phonology and morphology of the Baltic languages. Mouton.

Endzelīns, Jānis, William R. Schmaltiegs, and Benjamin̦š Jēgers. Jānis Endzelīns' Comparative Phonology and Morphology of the Baltic Languages. The Hague: Mouton, 1971.

Endzelīns, Jānis, et al. Jānis Endzelīns' Comparative Phonology and Morphology of the Baltic Languages. Mouton, 1971.