Gaya APA

Kholifah, H., Jannah, R. (2015). Lexical and Grammatical Devices to Reveal theme in Demi Lovato's Songs . Surabaya: Fakultas Adab dan Humaniora UINSA.

Gaya MLA

Kholifah, Hidayatul., Jannah, Raudlotul. "Lexical and Grammatical Devices to Reveal theme in Demi Lovato's Songs". Surabaya: Fakultas Adab dan Humaniora UINSA, 2015. Skripsi.