Gaya APA
Nowell-Smith, P.H.. (1961).
Ethics .
London:
Penguin Books.
Gaya Chicago
Nowell-Smith, P.H..
Ethics.
London:
Penguin Books,
1961.
Text.
Gaya MLA
Nowell-Smith, P.H..
Ethics.
London:
Penguin Books,
1961.
Text.
Gaya Turabian
Nowell-Smith, P.H..
Ethics.
London:
Penguin Books,
1961.
Print.