Gaya APA
Ishaq, R, E.
(April 2017).
Public relations : teori & praktek
(
Edisi Revisi)
.
malang:
Intrans Publishing.
Gaya MLA
Ishaq, Ropingi, El.
"Public relations : teori & praktek".
Edisi Revisi
malang:
Intrans Publishing,
April 2017.
Art Original.