Cita APA (7a ed.)

Piotrowska, I. (1947). The art of Poland. Philosophical library.

Cita Chicago Style (17a ed.)

Piotrowska, Irena. The Art of Poland. New York: Philosophical library, 1947.

Cita MLA (9a ed.)

Piotrowska, Irena. The Art of Poland. Philosophical library, 1947.