Citazione Stile APA (7a Edizione)
Richards, I. A., & Gibson, C. M. (2005). English through pictures: Book I, and, A first workbook of English. Pippin Pub. Corp..
Citazione stile Chigago Style (17a edizione)
Richards, I. A., e Christine M. Gibson. English Through Pictures: Book I, and, A First Workbook of English. Toronto: Pippin Pub. Corp., 2005.
Citatione MLA (9a ed.)
Richards, I. A., e Christine M. Gibson. English Through Pictures: Book I, and, A First Workbook of English. Pippin Pub. Corp., 2005.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.