Gaya APA
Ardika, Y.
(2019).
Umar bin Khaththab : Ksatria Pemberani
.
Surakarta:
Ziyad Books.
Gaya MLA
Ardika, Yuli.
"Umar bin Khaththab : Ksatria Pemberani".
Surakarta:
Ziyad Books,
2019.
Text.