Cita APA (7a ed.)

Pietrasi�nski, Z. (1969). The art of learning ([1st English ed.].). Pergamon Press.

Cita Chicago Style (17a ed.)

Pietrasi�nski, Zbigniew. The Art of Learning. [1st English ed.]. Oxford, New York: Pergamon Press, 1969.

Cita MLA (8a ed.)

Pietrasi�nski, Zbigniew. The Art of Learning. [1st English ed.]. Pergamon Press, 1969.