Gaya APA

Adi, J, P., Sri, M, A. (2014). Piano Harmony 1 (Cet. 1). Yogyakarta: Amazing.

Gaya MLA

Adi, Jarot, Pamungkas., Sri, Mulyadi, Akmal. "Piano Harmony 1". Cet. 1 Yogyakarta: Amazing, 2014. Text.