Merkel, K. (2000). Trilogy of stone and time: Klaus Merkel (Limited edition, numbered and signed by the artist.). Lars Müller Publishers.
Chicago-Zitierstil (17. Ausg.)Merkel, Klaus. Trilogy of Stone and Time: Klaus Merkel. Limited edition, numbered and signed by the artist. Zürich, Switzerland: Lars Müller Publishers, 2000.
MLA-Zitierstil (8. Ausg.)Merkel, Klaus. Trilogy of Stone and Time: Klaus Merkel. Limited edition, numbered and signed by the artist. Lars Müller Publishers, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.