Gaya APA
Ludlow, R. (2000).
the Essence of effective communication: komunikasi efektif / Ron Ludlow (Ed.1).
Yogyakarta:
Andi Yogyakarta.
Gaya MLA
Ludlow, Ron.
"the Essence of effective communication: komunikasi efektif / Ron Ludlow".
Ed.1
Yogyakarta:
Andi Yogyakarta,
2000.
Buku.