APA Style
Asimov, Isaac. (1974).
Earth Our Crowded Spaceship .
New York:
The John Day Company.
Chicago Style
Asimov, Isaac.
Earth Our Crowded Spaceship.
New York:
The John Day Company,
1974.
Text.
MLA Style
Asimov, Isaac.
Earth Our Crowded Spaceship.
New York:
The John Day Company,
1974.
Text.
Turabian Style
Asimov, Isaac.
Earth Our Crowded Spaceship.
New York:
The John Day Company,
1974.
Print.