Ruf, B., Baldessari, J., Gillick, L., & Weiner, L. (2007). Again the Metaphor Problem and Other Engaged Critical Discourses about Art: A Conversation between John Baldessari, Liam Gillick and Lawrence Weiner, moderated by Beatrix Ruf. Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)Ruf, Beatrix, John Baldessari, Liam Gillick, και Lawrence Weiner. Again the Metaphor Problem and Other Engaged Critical Discourses About Art: A Conversation Between John Baldessari, Liam Gillick and Lawrence Weiner, Moderated by Beatrix Ruf. Wien [u.a.]: Springer, 2007.
Παραπομπή σε μορφή MLA (8th εκδ.)Ruf, Beatrix, et al. Again the Metaphor Problem and Other Engaged Critical Discourses About Art: A Conversation Between John Baldessari, Liam Gillick and Lawrence Weiner, Moderated by Beatrix Ruf. Springer, 2007.