Gaya APA
Russel, Bertrand. (1997).
the Problems of philosophy .
New York:
Oxford University press.
Gaya Chicago
Russel, Bertrand.
the Problems of philosophy.
New York:
Oxford University press,
1997.
Buku.
Gaya MLA
Russel, Bertrand.
the Problems of philosophy.
New York:
Oxford University press,
1997.
Buku.
Gaya Turabian
Russel, Bertrand.
the Problems of philosophy.
New York:
Oxford University press,
1997.
Buku.