Wallwork, A. Discussions A-Z advanced: A resource book of speaking activities.
Citazione stile Chigago Style (17a edizione)Wallwork, Adrian. Discussions A-Z Advanced: A Resource Book of Speaking Activities.
Citatione MLA (8a ed.)Wallwork, Adrian. Discussions A-Z Advanced: A Resource Book of Speaking Activities.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.