Gaya APA

(Pengarang), A, W., (Pengarang), , R, K. (2012). The Ultimate Guide to Safety Signs on Ships . s.l. :: Marine Insight,.

Gaya MLA

(Pengarang), Anish, Wankhede., (Pengarang), , Raunek, Kantharia. "The Ultimate Guide to Safety Signs on Ships". s.l. :: Marine Insight,, 2012. Sumber Elektronik.