APA Citation

Asimov, b. I. (1974). Earth our crowded spacehip. The John Day Company.

Chicago Style Citation

Asimov, by Isaac. Earth Our Crowded Spacehip. The John Day Company, 1974.

MLA Citation

Asimov, by Isaac. Earth Our Crowded Spacehip. The John Day Company, 1974.

Warning: These citations may not always be 100% accurate.