Berg, J., & Duman, A. Who are the key workers? International Labour Organization.
Citazione stile Chigago Style (17a edizione)Berg, Janine, e Anil Duman. Who Are the Key Workers? International Labour Organization.
Citatione MLA (9a ed.)Berg, Janine, e Anil Duman. Who Are the Key Workers? International Labour Organization.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.