Gaya APA
Suparmo, L.
(2011).
Crisis Management & Public Relations Mengatasi Kiris, Memulihkan Citra
.
Jakarta:
Indeks.
Gaya MLA
Suparmo, Ludwing.
"Crisis Management & Public Relations Mengatasi Kiris, Memulihkan Citra".
Jakarta:
Indeks,
2011.
Buku.