Ritchie, E. M. With Botha in the Field.
Chicago-čujuhus (17. p.)Ritchie, Eric Moore. With Botha in the Field.
MLA-čujuhus (9. p.)Ritchie, Eric Moore. With Botha in the Field.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.