Retriever
Britannica
Cambridge University Press
ProQuest
Emerald
Universitetsforlaget
Ifinger
Oxford University Press
SAGE
Ithaka
Kunnskapsforlaget
Elsevier
Springer
Taylor & Francis
Institute of Physics
LM Information delivery
Swets
EBSCO
American Society of Microbiology
Royal Society of Chemistry
DeGruyter
Thomson Reuters