Stefferud, Alfred, editor
United States. Government Printing Office, 1966
Buku Referensi
McClure, H. Elliott (Howe Elliott), 1910-, author
Applied Scientific Research Corporation, [date of publication not identified]
Buku Referensi
Martin, Graham R.
Oxford University Press, 2017
eBooks
Walters, Martin
Miles Kelly, 2000
Buku Referensi
Strange, Morten
Periplus Editions, 1998
Buku Referensi