| #71 | Classica et mediaevalia. -- Copenhagen : Museum Tusculanum Press, 1938-. --  ISSN 0106-5815 print. --  ISSN 1604-9411 online | 
| #72 | Classical antiquity. -- Berkeley : University of California, 1982-. --  ISSN 0278-6656 print. --  ISSN 1067-8344 online | 
| #73 | Classical philology. -- Chicago : University of Chicago Press, 1906-. --  ISSN 0009-837X print. --  ISSN 1546-072X online | 
| #74 | Classical quarterly. -- Cambridge : Cambridge University Press, 1907-. --  ISSN 0009-8388 print. --  ISSN 1471-6844 online | 
| #75 | Cognitive science. -- Kidlington : Elsevier, 1977-. --  ISSN 0364-0213 print. --  ISSN 1551-6709 online | 
| #76 | Communication & cognition, Monographies. -- Gent : Communication & Cognition, 1968-. --  ISSN 0378-0880 | 
| #77 | Communication theory. -- New York : Guilford Publications, 1991-. --  ISSN 1050-3293 print. --  ISSN 1468-2885 online | 
| #78 | Computational linguistics. -- Association for Computational Linguistics, 1984-2008. --  ISSN 0891-2017 | 
| #79 | Corpus linguistics and linguistic theory. -- Berlin : De Gruyter, 2005-. --  ISSN 1613-7027 print. --  ISSN 1613-7035 online | 
| #80 | Časopis pro moderní filologii. -- Praha : Ústav pro jazyk český AV ČR, 1911-. --  ISSN 0862-8459 |