1. About Ourselves. Information booklet 'About Ourselves in BP Archive ' BP Archive ArcRef: 141869
2. Anjara, M.R.
(1975). Anjara, Legal and Taxation Manager, to Chief Executive, 18 Sept 1975.BP Archive ArcRef:181916
3. Answers to Indian Government's Second Questionnaire on Participation BP Archive BP Archive ArcRef:232373; B H Trenear -Thomas, March 1974, Visit to India, Ecuador, Peru in BP Archive, ArcRef: 137805.
4. Trenear –Thomas, B. H.
, March 1974. Visit to India, Ecuador, Peru. BP Archive ArcRef:137805
5. BOC annual reports