APA

Hallows (Richard); Lisboa (Martin); Unwin (Mark), . (2007). IELTS Express Intermediate Course book. : .

Chicago

Hallows (Richard); Lisboa (Martin); Unwin (Mark), . 2007. IELTS Express Intermediate Course book. : .

Harvard

Hallows (Richard); Lisboa (Martin); Unwin (Mark), . (2007). IELTS Express Intermediate Course book. : .

MLA

Hallows (Richard); Lisboa (Martin); Unwin (Mark), . IELTS Express Intermediate Course book. : . 2007.