A. Riawan Amin
The celestial management
Senayan Abadi Publishing, 2006
Buku Teks
Apeldoorn, C.G.L.
de globetrotter 2
J. Muusses , 1962
Buku Teks
Muirden, James
The amateur astronomer's handbook
Crowell, 1968
Buku Referensi
A. Riawan Amin
The celestial management / A. Riawan Amin
Embun Publishing, 2004
Buku Teks
Hawthorne, Nathaniel
The celestial railroad and others stories
Penguin Books, 1980
Buku Teks