Anthony Boardman, e. a. Cost-Benefit Analysis, 2018.
Lua i Stíl Chicago (17ú heag.)Anthony Boardman, et al. Cost-Benefit Analysis, 2018.
Lua MLA (8ú heag.)Anthony Boardman, et al. Cost-Benefit Analysis, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.