Gaya APA
Iswandi, K, E., Sembiring, I. (2011).
From Russia to the Country of Challenges .
Yogyakarta:
Galang Press.
Gaya MLA
Iswandi, Konstantius, Elias., Sembiring, Ita.
"From Russia to the Country of Challenges".
Yogyakarta:
Galang Press,
2011.
Text.