Citazione Stile APA (7a Edizione)
O'Neill, R. (1992). Success at First Certificate: Practice Test 1 with key (7.impression.). The University Press.
Citazione stile Chigago Style (17a edizione)
O'Neill, Robert. Success at First Certificate: Practice Test 1 with Key. 7.impression. Oxford: The University Press, 1992.
Citatione MLA (9a ed.)
O'Neill, Robert. Success at First Certificate: Practice Test 1 with Key. 7.impression. The University Press, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.