Gaya APA
Suparmo, L.
(2011).
Crisis management & public relations / Ludwig Suparmo
(
Cet. 1)
.
Jakarta:
Indeks.
Gaya MLA
Suparmo, Ludwig.
"Crisis management & public relations / Ludwig Suparmo".
Cet. 1
Jakarta:
Indeks,
2011.
Text.