Lackner, H. (2019). Yemen in crisis: Road to war (U.S. edition.). Verso.
Chicago-čujuhus (17. p.)Lackner, Helen. Yemen in Crisis: Road to War. U.S. edition. New York: Verso, 2019.
MLA-čujuhus (9. p.)Lackner, Helen. Yemen in Crisis: Road to War. U.S. edition. Verso, 2019.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.