L`Engle, Madeleine
A wind in the door / Madeleine L'Engle
Dell Publishing, 1973
Buku Teks
Asimov, Isaac
The Rest of the robots / Isaac Asimov
Grafton Books, 1990.
Buku Teks
L`Engle, Madeleine
A wrinkle in time / Madeleine L'Engle
Dell Publishing, 1962
Buku Teks
Sagan, Carl
Contact a novel / Carl Sagan.
Simon and Schuster , 1985
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Webb, Sharon
Ram song
Atheneum, 1984
Buku Teks