Windrow, Martin
Grange Books, 2000
Buku Referensi
Grenville, J.A.S.
Routledge, 2005
Buku Teks SO
Wladyslaw Narkiewicz
[Springer, ], 2012
eBooks
edited by John A. Bishop, Juan Gabriel Rodriguez
Emerald, 2017
eBooks
edited by E.M. Kirkpatrick ; assistant editors, C.M. Schwarz ... [and others]
Chambers, 1983
Buku Referensi