Asimov, Isaac, author
Grafton Books, 1990.
Buku Teks
edited by Martin H. Greenberg
Grafton, 1991
Buku Teks
Asimov, Isaac, author
Grafton Books, 1990
Buku Teks
Asimov, Isaac, author
Collier Books, 1962
Buku Teks
Asimov, Isaac, author
Gunung Agung, 1958
Buku Teks