APA Style

Office, U, K, H. (2021). Admiralty List Of Radio Signals: Pilot Services, Vessel Traffic Services, And Port Operations = Indian sub - content, South East Asia and Australasia NP286(4) Volume 6 2NS Edition 2021 (Second edition). London: United Kingdom Hydrographic Office.

MLA Style

Office, United, Kingdom, Hydrographic. "Admiralty List Of Radio Signals: Pilot Services, Vessel Traffic Services, And Port Operations = Indian sub - content, South East Asia and Australasia NP286(4) Volume 6 2NS Edition 2021". Second edition London: United Kingdom Hydrographic Office, 2021. Text.