Shepard, M. B. (2010). The art of collaboration: Stained-glass conservation in the twenty-first century; papers presented at the Forum for the Conservation Stained Glass, The International Committee of the Corpus Vitrearum for the Conservation of Stained Glass, held at The Metropolitan Museum of Art, New York, 1 - 3 June 2009 = L' art de travailler ensemble = Die Kunst der Zusammenarbeit. London [u.a.]: Harvey Miller.

Shepard, Mary B. The Art of Collaboration: Stained-glass Conservation in the Twenty-first Century; Papers Presented At the Forum for the Conservation Stained Glass, The International Committee of the Corpus Vitrearum for the Conservation of Stained Glass, Held At The Metropolitan Museum of Art, New York, 1 - 3 June 2009 = L' Art De Travailler Ensemble = Die Kunst Der Zusammenarbeit. London [u.a.]: Harvey Miller, 2010.

Shepard, Mary B. The Art of Collaboration: Stained-glass Conservation in the Twenty-first Century; Papers Presented At the Forum for the Conservation Stained Glass, The International Committee of the Corpus Vitrearum for the Conservation of Stained Glass, Held At The Metropolitan Museum of Art, New York, 1 - 3 June 2009 = L' Art De Travailler Ensemble = Die Kunst Der Zusammenarbeit. London [u.a.]: Harvey Miller, 2010.