Bibliographic database
database providing an authoritative source of bibliographic information
What Works Clearinghouse
Israeli Central Bureau of Statistics
Microsoft Academic Search
Social Sciences Citation Index
National Social Science Database
Current Index to Statistics
Internet Archive Scholar
Web of Science
Directory of Open Access Journals
Bibliography of the Hebrew Book
Academic Search
English Short Title Catalogue
Science Citation Index Expanded
Reptile Database
Bangladesh Journals OnLine
Biodiversity Heritage Library
German Union Catalogue of Serials
Australian Bibliographic Network
Research Papers in Economics
Chinese Science Citation Database
Web of Knowledge
Directory of Open Access Books
The Zoological Record
Short Title Catalogue Netherlands
Emerging Sources Citation Index
Croatian Scientific Bibliography
Universal Short Title Catalogue
Internet Speculative Fiction Database
Microsoft Academic
Iberian Books
Amphibian Species of the World
Aquatic Sciences and Fisheries Abstracts
FRANCIS
AGRIS
PASCAL
International Nuclear Information System
Grand Comics Database
E-Theses Online Service
Ulrich's Periodicals Directory
Biological Abstracts
Russian Science Citation Index
Atla Religion Database
Air University Library Index to Military Periodicals
Directory of Open Access Scholarly Resources
BIOSIS Previews
Bibliographic Index
Google Scholar
British Humanities Index
CAB Direct
Canadian Children's Book Centre