Gaya APA

Utami, P, A, P. (2011). The main duties of public relation officer at PT(persero) Pelabuhan Indonesia III head office Surabaya to maintain the good image of the company (CD) . Malang, Jatim: UNMER.

Gaya MLA

Utami, Putri, Ananto, Permata. "The main duties of public relation officer at PT(persero) Pelabuhan Indonesia III head office Surabaya to maintain the good image of the company (CD)". Malang, Jatim: UNMER, 2011. CD-ROM.