Gaya APA
Wijaya, F, R., Afiyanti, W. (2006).
The mass killers of the twentieth century (edisi 1).
Yogyakarta:
Narasi.
Gaya MLA
Wijaya, Febiola, Reza., Afiyanti, Windy.
"The mass killers of the twentieth century".
edisi 1
Yogyakarta:
Narasi,
2006.
Text.