Gaya APA
Yulir, Y.
(2013).
Geografi SMA Kelas X
(
Cet.1)
.
Jakarta:
Yudhistira.
Gaya MLA
Yulir, Yulmadia.
"Geografi SMA Kelas X".
Cet.1
Jakarta:
Yudhistira,
2013.
Printed Book.