Gaya APA

dkk, C, T. (2020). Keakhawatan 2 (Cet. 4). solo: Era Adicitra Intermedia.

Gaya MLA

dkk, Cahyadi, Takariawan,. "Keakhawatan 2". Cet. 4 solo: Era Adicitra Intermedia, 2020. BUKU CETAK (PRINTED BOOK).