Cita APA (7a ed.)

Reino Unido. Admiralty. Hydrographic Office. (1938). South Orkney Islands (carta principal). Hydrographic Office.

Cita Chicago Style (17a ed.)

Reino Unido. Admiralty. Hydrographic Office. South Orkney Islands (carta Principal). London: Hydrographic Office, 1938.

Cita MLA (8a ed.)

Reino Unido. Admiralty. Hydrographic Office. South Orkney Islands (carta Principal). Hydrographic Office, 1938.