Gaya APA

Hadi, Y, D, K, K. (2020). Using Duolingo Application To Improve Student Vocabulary For First Grade At Ma At-Thohiriyah Ngantru Tulungagung . Tulungagung: FTIK IAIN Tulungagung.

Gaya MLA

Hadi, Yuliasti, Dewi, Kartika, Karuna. "Using Duolingo Application To Improve Student Vocabulary For First Grade At Ma At-Thohiriyah Ngantru Tulungagung". Tulungagung: FTIK IAIN Tulungagung, 2020. Skripsi.