World 1 (Super Mario 3D World), MarioWiki

Super Mario 3D World Walkthrough - World 1 (All Green Stars & Stamps)

World 6 (Super Mario 3D World), MarioWiki

Super Mario 3D World - Wikipedia

World Bowser-1 Spiky Spike Bridge - Super Mario 3D World Guide - IGN

World 1 (Super Mario 3D World), MarioWiki

Cheats and Secrets - Super Mario 3D World Guide - IGN

World 8-1 (Super Mario 3D Land) - Super Mario Wiki, the Mario encyclopedia

Super Mario 3D World + Bowser's Fury, MarioWiki

Super Mario™ 3D World + Bowser's Fury for the Nintendo Switch™ system - Official Site