Cita APA (7th ed.)

Bereiter, C. (1979). Bargains galore: Mathematical thinking stories and problems. Open Court.

Cita Chicago (17th ed.)

Bereiter, Carl. Bargains Galore: Mathematical Thinking Stories and Problems. Illinois: Open Court, 1979.

Cita MLA (9th ed.)

Bereiter, Carl. Bargains Galore: Mathematical Thinking Stories and Problems. Open Court, 1979.