[Gt. Brit. Directorate of] Overseas Geological Surveys. Mineral Resources Division. Statistical summary of the mineral industry. H. M. Staty. Off.
Chicago-viite (17. p.)[Gt. Brit. Directorate of] Overseas Geological Surveys. Mineral Resources Division. Statistical Summary of the Mineral Industry. London: H. M. Staty. Off.
MLA-viite (9. p.)[Gt. Brit. Directorate of] Overseas Geological Surveys. Mineral Resources Division. Statistical Summary of the Mineral Industry. H. M. Staty. Off.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.