Gaya APA
Ayer, Aj. (1982).
Philosophy in the twentieth century .
London:
Unwin.
Gaya Chicago
Ayer, Aj.
Philosophy in the twentieth century.
London:
Unwin,
1982.
Text.
Gaya MLA
Ayer, Aj.
Philosophy in the twentieth century.
London:
Unwin,
1982.
Text.
Gaya Turabian
Ayer, Aj.
Philosophy in the twentieth century.
London:
Unwin,
1982.
Print.