APA-viite (7. p.)

Langfeld, G. Greman art in the Netherlands before and after World War II: Gregor Langfeld. Avant-Garde and criticism.(2007).

Chicago-viite (17. p.)

Langfeld, Gregor. "Greman Art in the Netherlands Before and After World War II: Gregor Langfeld." Avant-Garde and Criticism.(2007) .

MLA-viite (8. p.)

Langfeld, Gregor. "Greman Art in the Netherlands Before and After World War II: Gregor Langfeld." Avant-Garde and Criticism.(2007), .