1. Statistical theories of mental test scores;FM Lord,1968
2. Hoffnung und Furcht in der Leistungsmotivation [Hope and fear in achievement motivation]. Meisenheim am Glan;H Heckhausen,1963
3. A scoring manual for the achievement motive,1958
4. How do self-attributed and implicit motives differ?;DC McClelland;Psychol Rev,1989
5. Manual for scoring motive imagery in running text (4ed);DG Winter,1994