Cita APA (7th ed.)
Rigid frame formula / Kleinlogel, A 12th ed (12th ed.).
Cita Chicago (17th ed.)
Rigid Frame Formula / Kleinlogel, A 12th Ed. 12th ed.
Cita MLA (9th ed.)
Rigid Frame Formula / Kleinlogel, A 12th Ed. 12th ed.
Atenció: Aquestes cites poden no estar 100% correctes.