Oskarsson, Mats
Approaches to self-assessment in foreign language learning
Pergamon Press , 1980
 Buku Teks
Risk assessment of chemicals in the environment
edited by Mervyn L. Richardson
Royal Society of Chemistry, 1988
 Buku Teks
Danang initial risk assessment
GEF/UNDP/IMO Regional Programme on Building Partnerships in Environmental Management for the Seas of East Asia, 2004
 Buku Teks
Calabrese, Edward J.
Air toxics and risk assessment
Lewis, 1991
 Buku Teks
Burgman, M.A.
Risk assessment in conservation biology
Chapman & Hall, 1992
 Buku Teks