Cruz-Ferreira, M., & Abraham, S. A. (2012). Lang101: Linguistics exercises & activities for starters : 460 commented exercises & activities. CreateSpace.
Chicago-viite (17. p.)Cruz-Ferreira, Madalena, ja Sunita Anne Abraham. Lang101: Linguistics Exercises & Activities for Starters : 460 Commented Exercises & Activities. USA: CreateSpace, 2012.
MLA-viite (8. p.)Cruz-Ferreira, Madalena, ja Sunita Anne Abraham. Lang101: Linguistics Exercises & Activities for Starters : 460 Commented Exercises & Activities. CreateSpace, 2012.
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