Gaya APA
William, L. (1957).
An introduction to ethics .
London:
Methuen and Co..
Gaya Chicago
William, L..
An introduction to ethics.
London:
Methuen and Co.,
1957.
Text.
Gaya MLA
William, L..
An introduction to ethics.
London:
Methuen and Co.,
1957.
Text.
Gaya Turabian
William, L..
An introduction to ethics.
London:
Methuen and Co.,
1957.
Print.