APA
Mohamed S., Acklam R., . (1987). The pre-intermediate choice [Registo Sonoro]. London: Longman.
Chicago
Mohamed Sue, Acklam Richard, . 1987. The pre-intermediate choice [Registo Sonoro]. London: Longman.
Harvard
Mohamed S., Acklam R., . (1987). The pre-intermediate choice [Registo Sonoro]. London: Longman.
MLA
Mohamed Sue, Acklam Richard, . The pre-intermediate choice [Registo Sonoro]. London: Longman. 1987.