Uwe Jourdan, Oriental Rugs: Volume 5 - Turkoman Chuval (1989) Example no 266 page 290 attributed to Kizil Ayak Chuval - end of the 19th century

Antique Kizil Ayak Chuval / Juwal - Uwe Jourdan (1989) - Example no 266 page 290

Dan Levy - Art Pane Home of Oriental Carpets and Rugs