Aiu Ahra
Sky
Gramedia Pustaka Utama, 2016
 Buku Teks
Aiu Ahra
Sky
Gramedia Pustaka Utama, 2016
 Buku Teks
Clarke, Arthur C.
Voices from the sky: previews of the coming space age / Arthur C. Clarke
Harper and Row, 1965
 Buku Teks
Volkov, A.
Earth and Sky
Foreign Languages Publishing House, [date of publication not identified]
 Buku Teks
Coomaraswamy, Rama P.
The door in the sky
Princetown University Press, 1997
 Buku Teks