Niessen, U., Niessen, H., & Nordman, M. (2005). Maria Nordman - La Primavera, Le Printemps: Some time-specific works in city neighborhoods '68 ; [this book/sculpture is connected to a work in two sites: La Primavera: European community project in the UNESCO site of Zeche Zollverein Essen & Le Printemps the connected work placed in the atrium of the Landesmuseum Münster](1. ed., 1000 Ex.). Köln: König.

Maria Nordman - La Primavera, Le Printemps : Some time-specific works in city neighborhoods '68 ; [this book/sculpture is connected to a work in two sites: La Primavera: European community project in the UNESCO site of Zeche Zollverein Essen & Le Printemps the connected work placed in the atrium of the Landesmuseum Münster] / [production by Ursula & Hans-Jürgen Niessen] . — 1. ed., 1000 Ex.. — Köln : König, 2005. — 109 S; zahlr. Ill., graph. Darst. — ISBN 3931326470, 9783931326470

Niessen, Ursula, Hans-Jürgen Niessen, and Maria Nordman. Maria Nordman - La Primavera, Le Printemps: Some Time-specific Works in City Neighborhoods '68 ; [this Book/sculpture Is Connected to a Work in Two Sites: La Primavera: European Community Project in the UNESCO Site of Zeche Zollverein Essen & Le Printemps the Connected Work Placed in the Atrium of the Landesmuseum Münster].1. ed., 1000 Ex.Köln: König, 2005.