Gaya APA
Portisch, H.
(1967).
Eyewitness in Vietnam, transl.by M.Glenny.
.
London:
Bodley Head.
Gaya MLA
Portisch, Hugo..
"Eyewitness in Vietnam, transl.by M.Glenny. ".
London:
Bodley Head,
1967.
Buku.