周哲 & 陈盛. (2012). 力和引力: Force and gravity. 人民武警出版社.
Lua i Stíl Chicago (17ú heag.)周哲 agus 陈盛. 力和引力: Force and Gravity. 人民武警出版社, 2012.
Lua MLA (8ú heag.)周哲 agus 陈盛. 力和引力: Force and Gravity. 人民武警出版社, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.