Butterfield,Jeff. (2019). Soft Skills For Everyone (2nd ed.). Cengage Learning India.
Lua i Stíl Chicago (17ú heag.)Butterfield,Jeff. Soft Skills For Everyone. 2nd ed. Delhi: Cengage Learning India, 2019.
Lua MLA (9ú heag.)Butterfield,Jeff. Soft Skills For Everyone. 2nd ed. Cengage Learning India, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.