Gaya APA

Abdurrahman, Z. et al (2014). Ilham Keberanian Umar bin Khathab (Pertama). Jogjakarta: DIVA Press.

Gaya MLA

Abdurrahman, Zen. et al. "Ilham Keberanian Umar bin Khathab". Pertama Jogjakarta: DIVA Press, 2014. Text.