Osmond, A. (2013). Academic writing and grammar for students. Sage.
Citazione stile Chigago Style (17a edizione)Osmond, Alex. Academic Writing and Grammar for Students. Los Angeles, Calif: Sage, 2013.
Citatione MLA (9a ed.)Osmond, Alex. Academic Writing and Grammar for Students. Sage, 2013.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.