Gaya APA
George, Helen. (1996).
The Professional contract workers yearbook .
London:
McGraw Hill.
Gaya Chicago
George, Helen.
The Professional contract workers yearbook.
London:
McGraw Hill,
1996.
Buku.
Gaya MLA
George, Helen.
The Professional contract workers yearbook.
London:
McGraw Hill,
1996.
Buku.
Gaya Turabian
George, Helen.
The Professional contract workers yearbook.
London:
McGraw Hill,
1996.
Buku.