AYALA, C. S. B. (2010). Boards and wards. Wolters Kluwer.
Chicago-čujuhus (17. p.)AYALA, Carlos. Spellberg Brad. Boards and Wards. Wolters Kluwer, 2010.
MLA-čujuhus (9. p.)AYALA, Carlos. Spellberg Brad. Boards and Wards. Wolters Kluwer, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.