APA Style

ADMIRALTY LIST OF RADIO SIGNALS : Global Maritime Distress And Safety System NP285 Vol.5 2018/19. (2018). London: United Kingdom Hydrographic Office.

MLA Style

ADMIRALTY LIST OF RADIO SIGNALS : Global Maritime Distress And Safety System NP285 Vol.5 2018/19. . London: United Kingdom Hydrographic Office, 2018. Text.