Weylman, C. R. (2019). The power of why (1st.). Jaico Publishing, Mumbai.
Lua i Stíl Chicago (17ú heag.)Weylman, C. Richard. The Power of Why. 1st. Jaico Publishing, Mumbai, 2019.
Lua MLA (9ú heag.)Weylman, C. Richard. The Power of Why. 1st. Jaico Publishing, Mumbai, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.