how can i delete details of articles

hi

i want to delete the details of articles, i already try to hide and "no show" on Article Manager Options, but still showing category and publishing date.

Please help me telling me how can i delete those details

Beside disabling it for the article, try to disable it in the menu item parameters of this page (if this page has a menu item), and also, in Global settings (click Options icon in Article Manager).