APA Style
Utama, B, S., Lesmana, Y. (2017).
Memorizing Like An Elephant : for Professionals .
Jakarta:
Kepustakaan Populer Gramedia.
MLA Style
Utama, Bey, Sapta., Lesmana, Yudi.
"Memorizing Like An Elephant : for Professionals".
Jakarta:
Kepustakaan Populer Gramedia,
2017.
Psikologi.