Electronic catalogue for over 100 of the major university libraries and the British Library.

Virtual catalogue
Electronic portal for most of the German university libraries and also many in the United Kingdom and the United States.

Search engine for journal articles

Social Sciences Citation Index
Search for articles, authors, titles keywords in the social sciences.

Search for articles, authors, titles keywords in the health sciences.

Social Science Open Access Repository
Social Science Open Access Repository provides articles in German and English.

Sage Journals
Search and find journal articles published by SAGE.

American Psychological Association citation style
American Psychological Association has developed rules for citation, which are more widely used beyond psychology.

  • Chicago citation style
  • Orientation about referencing

Modern Language Association style.
MLA comes from the Modern Language Association.

Harvard citation style
Harvard citation style for referencing is also widely used in the social sciences.

Research proposals
The following link gives you some more orientation about examples and suggestions for writing a research proposal based on a google search.