Gaya APA

ASIMOV, ISAAC. (1963). The Clock We Live On . New York: Collier Books.

Gaya Chicago

ASIMOV, ISAAC. The Clock We Live On. New York: Collier Books, 1963. Text.

Gaya MLA

ASIMOV, ISAAC. The Clock We Live On. New York: Collier Books, 1963. Text.

Gaya Turabian

ASIMOV, ISAAC. The Clock We Live On. New York: Collier Books, 1963. Print.