Armstrong, Karen
The Spiral Staircase / Karen Amstrong
Harper Perennial, 2005
Buku Teks
Hodge, Paul
The spiral galaxy M33
Springer, 2012
eBooks
Elmasri, Ramez
Operating systems: a spiral approach
McGraw-Hill, 2010
Buku Teks
Chang Kia-Ngau
The inflationary spiral : the experince in China, 1939-1950
Massachusetts Institute of Technology, 1958
Buku Teks
Callan, Mary F.
Containing the health care cost spiral
McGraw-Hill, 1991
Buku Teks