Cita APA (7th ed.)
MACKAY, H., & RATTI, C. (1991). POSITION-NUMERAL EQUIVALENCES AND DELAYED POSITION RECOGNITION SPAN.
Cita Chicago (17th ed.)
MACKAY, H., i C. RATTI. POSITION-NUMERAL EQUIVALENCES AND DELAYED POSITION RECOGNITION SPAN. 1991.
Cita MLA (9th ed.)
MACKAY, H., i C. RATTI. POSITION-NUMERAL EQUIVALENCES AND DELAYED POSITION RECOGNITION SPAN. 1991.
Atenció: Aquestes cites poden no estar 100% correctes.