Karrer, U. (1989) Computer-assisted learning : toward the development and use of quality courseware [book], European university studies. Ser. 41, Informatic. Lang.
Chicago Manual of Style 17th edition (full note)Karrer, Urs. „Computer-assisted learning : toward the development and use of quality courseware“. Book. European university studies. Ser. 41, Informatic. European university studies. Ser. 41, Informatic 3. Lang, [1989?], Lang, [1989?].
American Psychological Association 7th editionKarrer, U. (ca. 1989). Computer-assisted learning : toward the development and use of quality courseware [Book]. In European university studies. Ser. 41, Informatic. Lang.
Modern Language Association 9th editionKarrer, U. „Computer-assisted learning : toward the development and use of quality courseware“. European university studies. Ser. 41, Informatic, book, Lang, 1989.
ISO-690 (author-date, Deutsch)KARRER, Urs, 1989. Computer-assisted learning : toward the development and use of quality courseware. Bern: Lang