Lua APA (7ú heag.)
Reich, H. (2016). What is gravity. MinuteEarth/MinutePhysics.
Lua i Stíl Chicago (17ú heag.)
Reich, Henry. What Is Gravity. [Place of publication not identified]: MinuteEarth/MinutePhysics, 2016.
Lua MLA (9ú heag.)
Reich, Henry. What Is Gravity. MinuteEarth/MinutePhysics, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.