Gaya APA

Office, U, K, H. (2023). Admiralty List of Radio Signals : Radio Aids to Navigation, Differential GPS (DGPS), Legal Time, Radio Time Signals and Electronic Position Fixing System; Europe, Africa and Asia (excluding the Far East) (Ed. 4). United Kingdom: The UK Hydrographic Office.

Gaya MLA

Office, United, Kingdom, Hydrographic. "Admiralty List of Radio Signals : Radio Aids to Navigation, Differential GPS (DGPS), Legal Time, Radio Time Signals and Electronic Position Fixing System; Europe, Africa and Asia (excluding the Far East)". Ed. 4 United Kingdom: The UK Hydrographic Office, 2023. Text.