Gaya APA
Twiford, Rainer. (1979).
A Child with a problem : Rainer Twiford .
New Jersey:
Prentice-Hall.
Gaya Chicago
Twiford, Rainer.
A Child with a problem : Rainer Twiford.
New Jersey:
Prentice-Hall,
1979.
Buku.
Gaya MLA
Twiford, Rainer.
A Child with a problem : Rainer Twiford.
New Jersey:
Prentice-Hall,
1979.
Buku.
Gaya Turabian
Twiford, Rainer.
A Child with a problem : Rainer Twiford.
New Jersey:
Prentice-Hall,
1979.
Buku.