The Indo-European Languages / edited by Anna Giacalone Ramat and Paolo Ramat
Routledge, 1998
 Buku Teks
Haider, Hubert
Verb second phenomena in Germanic
Foris Publications, 1986
 Buku Teks
Amelia Shinta Larasati
Ciri Budaya Indo: Analisis Semiotika Roland Barthes pada Meme Indo's Be Like = Characteristics of Indo Culture: Roland Barthes' Semiotic Analysis of "Indo's be Like" Memes
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2019
 UI - Tugas Akhir
Morpheme order and semantic scope : word formation in the Athapaskan verb / Keren Rice
Cambridge University Press, 2000
 eBooks
Fick, August
Vergleichendes worterbuch der Indogermanischen sprachen
Vandenhoeck & Ruprecht, 1909
 Buku Referensi