Bibliografia
Principal
- Sue Robbins (2012) Collins COBUILD Business Vocabulary in Practice Glasgow: Harper Collins
- Ann Henshall (ed) (2025) A consumer society dinsponível no Fénix
- Ann Henshall (ed) (2025) The oil industry disponível no Fénix
Secundária
- Ann Henshall (2025) Grammar file 1 disponível no Fénix