Where next, Columbus? : the future of space exploration / edited, Valerie Neal
Oxford University Press , 1994
 Buku Teks SO
Space law : views of the future
edited by Tanja L. Zwaan
[Publisher not identified], 1988
 Buku Teks SO
Merintis masa depan: impian menjadi kenyataan
Zulkeffeli Mat Jusoh, editor
Agensi Angkasa Negara, 2010
 Buku Referensi
Seedhouse, Erik
Interplanetary outpost : the human and technological challenges of exploring the outer planets
[Springer, ], 2012
 eBooks
Alternative space futures and the human condition : UNISPACE 82 International Round Table
edited by Kiran Karnik
Pergamon Press, 1982
 Buku Teks SO