Gaya APA
ANN, K., UMA, D.
(2014).
To be a perfect student:
.
Yogyakarta:
Certe Posse.
Gaya MLA
ANN, Katharina., UMA, Dewi.
"To be a perfect student:".
Yogyakarta:
Certe Posse,
2014.
Buku.