Puvogel, R. (1995). Lehrgeld: 20 Künstler-Portraits ; Robert Adrian X, Richard Artschwager, Gordon Matta-Clark. / Renate Puvogel. Oktagon.
Citazione stile Chigago Style (17a edizione)Puvogel, Renate. Lehrgeld: 20 Künstler-Portraits ; Robert Adrian X, Richard Artschwager, Gordon Matta-Clark. / Renate Puvogel. Köln [u.a.]: Oktagon, 1995.
Citatione MLA (8a ed.)Puvogel, Renate. Lehrgeld: 20 Künstler-Portraits ; Robert Adrian X, Richard Artschwager, Gordon Matta-Clark. / Renate Puvogel. Oktagon, 1995.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.