Cita APA (7th ed.)
STRAND, S., & MORRIS, R. (1987). PROGRAMMED TRAINING OF VISUAL DISCRIMINATIONS: A COMPARISON OF TECHNIQUES.
Cita Chicago (17th ed.)
STRAND, S.C, i R.C MORRIS. PROGRAMMED TRAINING OF VISUAL DISCRIMINATIONS: A COMPARISON OF TECHNIQUES. 1987.
Cita MLA (9th ed.)
STRAND, S.C, i R.C MORRIS. PROGRAMMED TRAINING OF VISUAL DISCRIMINATIONS: A COMPARISON OF TECHNIQUES. 1987.
Atenció: Aquestes cites poden no estar 100% correctes.