Gaya APA
Russell, Bertrand. (1961).
Has man a future ? .
New York:
George Allen.
Gaya Chicago
Russell, Bertrand.
Has man a future ?.
New York:
George Allen,
1961.
Text.
Gaya MLA
Russell, Bertrand.
Has man a future ?.
New York:
George Allen,
1961.
Text.
Gaya Turabian
Russell, Bertrand.
Has man a future ?.
New York:
George Allen,
1961.
Print.