Gaya APA
Wallen, M. (1989).
Person to person : Students' book/ Richard D Lewis, Chris Harris, Matt Wallen .
London:
Grosvenor Press.
Gaya MLA
Wallen, Matt.
"Person to person : Students' book/ Richard D Lewis, Chris Harris, Matt Wallen".
London:
Grosvenor Press,
1989.
Text.