Gaya APA
Sahri, R, D., Ermawati, M. (2014).
Primagama Smart Solution Lulus Ujian Nasional SMA/MA IPS 2015 .
Jakarta:
Grasindo.
Gaya MLA
Sahri, Romadi, Dkk., Ermawati, Meidayani.
"Primagama Smart Solution Lulus Ujian Nasional SMA/MA IPS 2015".
Jakarta:
Grasindo,
2014.
Text.