Unity Tutorials #2 - Menu Scene Pt. 1 [GUI]- Button Layout - YouTube
Unity - Scripting API: GUILayout.FlexibleSpace
Unity GUILayout Button - Unity Answers
unity - Why when changing gui box color ith a color variable in the inspector in run time the color on a gui button is not the same? - Game Development Stack Exchange
GUILayout.Button image - Unity Answers
How do I change WindowEditor's GUILayout? - Unity Answers
Custom List, a Unity C# Editor Tutorial
Custom Inspector: Making Individual Vertical Containers and Dynamically Adding & Removing Child Elements - Unity Answers
Unity - Scripting API: GUILayout.ExpandWidth
Unity Tutorials: How To Create Custom Editor Window - WeeklyHow