Gaya APA

Wardhana, N, D., Arfiandy, B. (2020). Code Helix Volume 01 (Cet 1). Jakata: PT Gramedia Pustaka Utama.

Gaya MLA

Wardhana, Nikki, Dibya., Arfiandy, Bryan. "Code Helix Volume 01". Cet 1 Jakata: PT Gramedia Pustaka Utama, 2020. Text.