Gaya APA

Sirait, V, E. et al (2015). Trik A-Z menguasai piano : the best instruction book ever! step by step system (Cet. 1). Yogyakarta: Indoliterasi.

Gaya MLA

Sirait, Van, Eko. et al. "Trik A-Z menguasai piano : the best instruction book ever! step by step system". Cet. 1 Yogyakarta: Indoliterasi, 2015. Text.