Botswana Telecommunications Authority (2009-09-11). Botswana (country code +267). National Numbering Plans. International Telecommunication Union. Archived from the original(DOC) on 27 December 2009. Retrieved 2009-12-27.
Botswana Telecommunications Authority (2009-09-11). Botswana (country code +267). National Numbering Plans. International Telecommunication Union. Archived from the original(DOC) on 27 December 2009. Retrieved 2009-12-27.