(1) If a work or part of a work is reproduced or distributed pursuant to section 45 (1), sections 45a to 48, 50, 51, 58, 59, sections 60a to 60c, 61, 61c, 61d and 61f, the source must in all cases be clearly indicated. In the case of the reproduction or distribution of entire literary works or entire musical works, the publishing house which released the work is to be indicated in addition to the author and it is also to be clearly indicated whether the work has been abridged or other alterations have been made. The obligation to indicate the source does not apply where the source is neither named on the work used or when the work used is communicated nor otherwise known to the person authorised to make the reproduction or distribution or, in the case of section 60a or of section 60b, the examination purposes necessitate dispensing with indicating the source.
(2) Where, under the provisions of this section, it is permitted to communicate a work to the public, the source is to be clearly indicated if and insofar as this is required by customary practice. In cases of communication to the public pursuant to sections 46, 48, 51, sections 60a to 60d, 61, 61c, 61d and 61f, as well as other digital uses pursuant to section 60a, the source, including the author’s name, must in all cases be indicated, unless this is not possible.
(3) If an article in a newspaper or in another information leaflet is printed in accordance with section 49 (1) in another newspaper or in another information leaflet or is broadcast, the newspaper or the information leaflet from which the article was taken is to be cited along with the author designated in the source used; if a different newspaper or a different information leaflet is cited there, that newspaper or information leaflet is to be indicated. If a broadcast commentary is printed in a newspaper or in another information leaflet or is broadcast pursuant to section 49 (1), the broadcasting organisation which broadcast the commentary is to be indicated along with the author.