(1986). ESP in practice: Models and challenges for teachers. English Language Programs Division, Bureau of Educational and Cultural Affairs, USAID.
Citazione stile Chigago Style (17a edizione)ESP in Practice: Models and Challenges for Teachers. Washington, D.C: English Language Programs Division, Bureau of Educational and Cultural Affairs, USAID, 1986.
Citatione MLA (9a ed.)ESP in Practice: Models and Challenges for Teachers. English Language Programs Division, Bureau of Educational and Cultural Affairs, USAID, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.