Gaya APA
Subiakto, A.
(2010).
U-Boat The battle of the Atlantic
(
Cet.1)
.
Yogyakarta:
Narasi.
Gaya MLA
Subiakto, Ari.
"U-Boat The battle of the Atlantic".
Cet.1
Yogyakarta:
Narasi,
2010.
Text.