cross-referencing IDREFs on aria-labelledby and aria-controls + button with both aria-haspopup and aria-expanded attributes · Issue #476 · w3c/aria-practices · GitHub
ARIA labels and relationships | Articles | web.dev
Create labels for form controls using the aria-label attribute - YouTube
ARIA labels and relationships | Articles | web.dev
WAI-ARIA: aria-controls (Property) • DigitalA11Y
aria-*] attributes do not have valid values - Support - Themeco Forum
ARIA labels and relationships | Articles | web.dev