Butterfield,Jeff. (2019). Soft Skills For Everyone (2nd ed.). Cengage Learning India.
Citazione stile Chigago Style (17a edizione)Butterfield,Jeff. Soft Skills For Everyone. 2nd ed. Delhi: Cengage Learning India, 2019.
Citatione MLA (9a ed.)Butterfield,Jeff. Soft Skills For Everyone. 2nd ed. Cengage Learning India, 2019.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.