APA Style

Admiralty List Of Radio Signals : Global Maritime Distress And Safety System (GMDSS) NP285 Vol. 5 2019/20. (2019). London: United Kingdom Hydrographic Office.

MLA Style

Admiralty List Of Radio Signals : Global Maritime Distress And Safety System (GMDSS) NP285 Vol. 5 2019/20. . London: United Kingdom Hydrographic Office, 2019. Text.