Cita APA (7a ed.)

Hargittai, I., & Pickover, C. A. (1993). Spiral symmetry. World Scientific.

Cita Chicago Style (17a ed.)

Hargittai, István, y Clifford A. Pickover. Spiral Symmetry. Singapore [etc.]: World Scientific, 1993.

Cita MLA (9a ed.)

Hargittai, István, y Clifford A. Pickover. Spiral Symmetry. World Scientific, 1993.