APA Format
Barker, J.W. (1960).
Teach yourself Portuguese / by J.W. Barker
. London :: The English Universities Press,.
MLA Format
Barker, J.W.
Teach yourself Portuguese / by J.W. Barker
. London :: The English Universities Press,, 1960
Chicago Format
Barker, J.W. Teach yourself Portuguese / by J.W. Barker. London :: The English Universities Press,, 1960.