APA (7th ed.) Citation

Christensen, E. O. (1955). Primitive art. Crowell [u.a.].

Chicago Style (17th ed.) Citation

Christensen, Erwin Ottomar. Primitive Art. New York, NY [u.a.]: Crowell [u.a.], 1955.

MLA (9th ed.) Citation

Christensen, Erwin Ottomar. Primitive Art. Crowell [u.a.], 1955.