Gaya APA
Caspar, Robert. (1989).
Trying to answer questions .
Roma:
PISAI.
Gaya Chicago
Caspar, Robert.
Trying to answer questions.
Roma:
PISAI,
1989.
Buku.
Gaya MLA
Caspar, Robert.
Trying to answer questions.
Roma:
PISAI,
1989.
Buku.
Gaya Turabian
Caspar, Robert.
Trying to answer questions.
Roma:
PISAI,
1989.
Buku.