Gaya APA
Abdurrahman, Z.
(2014).
Ilham Keberanian Umar bin Khathab
.
Yogyakarta:
DIVA Press.
Gaya MLA
Abdurrahman, Zen.
"Ilham Keberanian Umar bin Khathab".
Yogyakarta:
DIVA Press,
2014.
Text.