Citazione Stile APA (7a Edizione)
Terry, M., & Wilson, J. (2012). Focus on Academic Skills for IELTS (4.vyd.). Pearson Education Limited.
Citazione stile Chigago Style (17a edizione)
Terry, Morgan, e Judith Wilson. Focus on Academic Skills for IELTS. 4.vyd. Harlow: Pearson Education Limited, 2012.
Citatione MLA (9a ed.)
Terry, Morgan, e Judith Wilson. Focus on Academic Skills for IELTS. 4.vyd. Pearson Education Limited, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.