POLITEKNIK PELAYARAN SURABAYA,1307 POLTEKPEL,237 Marine Insight,184 INTERNATIONAL MARITIME ORGANIZATION,; INTERNATIONAL MARITIME ORGANIZATION,149 IMO,103 ERLANGGA,97 -84 INTERNATIONAL MARITIME ORGANIZATION,61 ELEX MEDIA KOMPUTINDO,58 Graha Ilmu,57 Cambridge University Press,56 Gramedia Pustaka Utama,55 Andi,48 DEEPUBLISH,45 ANDI OFFSET,41 Elsevier,38 Gramedia,37 ANDI Yogyakarta,33 John Wiley & Sons,32 Jakad Media Publishing,31