Cita APA (7a ed.)

Grohmann, W. (1956). Paul Klee. Harry N. Abrams.

Cita Chicago Style (17a ed.)

Grohmann, Will. Paul Klee. New York: Harry N. Abrams, 1956.

Cita MLA (9a ed.)

Grohmann, Will. Paul Klee. Harry N. Abrams, 1956.