APA Style
Singleton, Jane. (s.a).
Business Listening And Speaking Intermediate .
s.l.:
S.n..
Chicago Style
Singleton, Jane.
Business Listening And Speaking Intermediate.
s.l.:
S.n.,
s.a.
.
MLA Style
Singleton, Jane.
Business Listening And Speaking Intermediate.
s.l.:
S.n.,
s.a.
.
Turabian Style
Singleton, Jane.
Business Listening And Speaking Intermediate.
s.l.:
S.n.,
s.a.
.