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WordPress : Change title of sidebar widget dynamically – Stack Overflow http://stackoverflow.com/questions/6078112/wordpress-change-title-of-sidebar-widget-dynamically
php – How to add another text box to WP_Widget_Text – Stack Overflow http://stackoverflow.com/questions/9822521/how-to-add-another-text-box-to-wp-widget-text
wordpress – PHP: parent::somefunction or $this->somefunction – Stack Overflow http://stackoverflow.com/questions/3697730/php-parentsomefunction-or-this-somefunction
Building Custom WordPress Widgets | Wptuts+ http://wp.tutsplus.com/tutorials/creative-coding/building-custom-wordpress-widgets/