APA (7e ed.) Bronvermelding

Merkel, K. (2000). Trilogy of stone and time: Klaus Merkel (Limited edition, numbered and signed by the artist.). Lars Müller Publishers.

Chicago (17e ed.) Bronvermelding

Merkel, Klaus. Trilogy of Stone and Time: Klaus Merkel. Limited edition, numbered and signed by the artist. Zürich, Switzerland: Lars Müller Publishers, 2000.

MLA (8e ed.) Bronvermelding

Merkel, Klaus. Trilogy of Stone and Time: Klaus Merkel. Limited edition, numbered and signed by the artist. Lars Müller Publishers, 2000.