Gaya APA
Jones, Leo. (1989).
Progress to proficiency : teacher's book / Leo Jones .
:
Cambridge : Canbridge University Press.
Gaya Chicago
Jones, Leo.
Progress to proficiency : teacher's book / Leo Jones.
:
Cambridge : Canbridge University Press,
1989.
Buku.
Gaya MLA
Jones, Leo.
Progress to proficiency : teacher's book / Leo Jones.
:
Cambridge : Canbridge University Press,
1989.
Buku.
Gaya Turabian
Jones, Leo.
Progress to proficiency : teacher's book / Leo Jones.
:
Cambridge : Canbridge University Press,
1989.
Buku.