Office, U, K, H.(2012).Admiralty List of Radio Signals Vol. 2 : Radio Aids to Navigation, Differential GPS (DGPS) Legal Time, Radio Time Signals and Electronic Position Fixing Systems (Edisi 2012/13) (Edisi 2012/13 (NP 282_).United Kingdom:Penerbit The United Kingdom Hydrographic Office.
Gaya MLA
Office, United, Kingdom, Hydrographic."Admiralty List of Radio Signals Vol. 2 : Radio Aids to Navigation, Differential GPS (DGPS) Legal Time, Radio Time Signals and Electronic Position Fixing Systems (Edisi 2012/13)".Edisi 2012/13 (NP 282_United Kingdom:Penerbit The United Kingdom Hydrographic Office,2012.Text.